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• Search row with highest number of cells in a row with colspan

  - by user593029

  What is the efficient way to search highest number of cells in big table with numerous colspan (merge cells ** colspan should be ignored so in below example highest number of cells is 4 in first row). Is it js/jquery with reg expression or just the loop with bubble sorting. I got one link as below explainig use of regex is it ideal way ... can someone suggest pseudo code for this. High cpu consumption due to a jquery regex patch <table width="156" height="84" border="0" > <tbody> <tr style="height:10px"> <td width="10" style="width:10px; height:10px"/> <td width="10" style="width:10px; height:10px"/> <td width="10" style="width:10px; height:10px"/> <td width="10" style="width:10px; height:10px"/> </tr> <tr style="height:10px"> <td width="10" style="width:10px; height:10px" colspan="2"/> <td width="10" style="width:10px; height:10px"/> <td width="10" style="width:10px; height:10px"/> </tr> <tr style="height:10px"> <td width="10" style="width:10px; height:10px"/> <td width="10" style="width:10px; height:10px"/> <td width="10" style="width:10px; height:10px" colspan="2"/> </tr> <tr style="height:10px"> <td width="10" style="width:10px; height:10px" colspan="2"/> <td width="10" style="width:10px; height:10px"/> <td width="10" style="width:10px; height:10px"/> </tr> </tbody> </table>

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• SWF (using XML) only working locally, not on home server or web hosting server

  - by Andy

  Hi, I use a main SWF file, which has some animations. It uses xml from a .php file which specifies several items, e.g. images and other SWFs to be used in the main SWF. Locally everything works perfectly, but when invoking it via my home server, or hosting provider it doesn't work anymore and I don't get why. All links are relative and correct. Somehow the main SWF doesn't load fully, or has problems with the XML from the .php file. I'm not sure, now I only get a black box that doesn't show any of the other content it's supposed to. check it out: http://deoshermes.ath.cx/cc-common/templates/dynamiclead/dynamic_leadee.swf the XML: <?xml version="1.0" ?><dynamic_content> <item blurb="Text 1" content_url="" content_source="" content_timer="8000" content_target="_self" tab_color="0x000000" tab_border_color="0x000000" tab_arrow_color="0xFFFFFF" tab_text_color="0xFFFFFF" tab_image="/template/images/dle_TOPmay06.jpg" cycle="true" content_border_color="0x" content_bg_image="" tab_hl_color="0x000000" tab_highlight_color="0x" tab_highlight_text_color="0x" tab_highlight_image="" > </item> <item blurb="Text 2" content_timer="5000" cycle="true" content_border_color="0x" content_bg_image="" tab_hl_color="0xFFFFFF" tab_border_color="0xFFFFFF" tab_color="0xFFFFFF" tab_arrow_color="0xFFFFFF" tab_text_color="0xFFFFFF" tab_image="/template/images/dle_MIDandBOTmay06.jpg" tab_highlight_color="0x" tab_highlight_text_color="0x" tab_highlight_image="" content_url="" content_source="" content_target="_self" > </item> <item blurb="Text 3" content_timer="5000" cycle="true" content_border_color="0x" content_bg_image="" tab_hl_color="0xFFFFFF" tab_border_color="0xFFFFFF" tab_color="0xFFFFFF" tab_arrow_color="0xFFFFFF" tab_text_color="0xFFFFFF" tab_image="/template/images/dle_MIDandBOTmay06.jpg" tab_highlight_color="0x" tab_highlight_text_color="0x" tab_highlight_image="" content_url="" content_source="" content_target="_self" > </item> </dynamic_content> this works like a charm when invoking the main SWF locally. The ActionScript from the main sWF can be found at samedomain as above/Actionscript_mainmovie.txt This also seems to work great. the function formattabs (line 68) uses some javascript. Locally the main SWF functions even without this hbx file which is located /cc-common/wss/hbx.js and use in the webpage actually. I haven't got a clue what's keeping the main SWF from working properly, because all other single SWFs work properly when invoked using a direct link. And this one just isn't working... Do I maybe need to add something in the php.ini file?? Any help would be appreciated!

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• Define Javascript slider hit/rollover area

  - by Rob

  Hey, Im having an issue defining the hit area for a javascript sliding element. See example: http://www.warface.co.uk/clients/warface.co.uk/ Please slide over the grey box on the right side to reveal the button, although this works I would only like for the slider to only be triggered by rolling over the red block. CSS .slidingtwitter { /* -- This is the hit area -- */ background: #ccc; width:255px; height:55px; overflow: hidden; top:50%; right: 0px; /* -- This is the sliding start point -- */ position: fixed; font-family: Gotham, Sans-Serif; z-index: 50; } .slidingtwitter.right { right:0px; } .slidingtwitter .caption { /* -- This is the sliding area -- */ background: #fff; position: absolute; width:260px; height:55px; right: -205px; /* -- This is the sliding start point -- */ } .slidingtwitter a { color: #484848; font-size: 20px; text-transform: uppercase; } .slidingtwitter a:hover { color: black; } .slidingtwitter .smaller { font-size: 12px; font-family: Gotham Medium; } .twitterblock { background: #f35555 url("styles/images/button_twitter.png") no-repeat 14px 15px ; width:35px; height:35px; padding:10px; float:left; display:block; } .slidingtwitter .followme { background: url("styles/images/button_arrowheadthin.jpg")no-repeat right 0; height:35px; display:block; float:left; line-height:14px; width:140px; margin:10px 0px 0px 14px; padding-top:6px; padding-right: 40px; } JS $('.slidingtwitter').hover(function(){ $(".slide", this).stop().animate({right:'0px'},{queue:false,duration:400}); //Position on rollover },function() { $(".slide", this).stop().animate({right:'-205px'},{queue:false,duration:400}); //Position on rollout }); Any suggestions would be much appreciated.

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• jQuery: Giving each matched element an unique ID

  - by AnGafraidh

  I am writing an 'inline translator' application to be used with a cloud computing platform to extend non-supported languages. The majority of this uses jQuery to find the text value, replace it with the translation, then append the element with a span tag that has an unique ID, to be used elsewhere within the application. The problem arises however, when there are more than one element, say , that have the exact same value to be translated (matched elements). What happens in the function in question is that it puts all matched elements in the same span, taking the second, third, fourth, etc. out of their parent tags. My code is pretty much like this example: <script src='jquery-1.4.2.js'></script> <script> jQuery.noConflict(); var uniqueID='asdfjkl'; jQuery(window).ready(function() { var myQ1 = jQuery("input[id~=test1]"); myClone=myQ1.clone(); myClone.val('Replaced this button'); myQ1.replaceWith('<span id='+uniqueID+'></span>'); jQuery('#'+uniqueID).append(myClone); }); </script> <table> <tr><td> <input id='test1' type='button' value="I'm a button!"></input> &nbsp; <input id='test2' type='button' value="And so am I"></input> </tr></td> <tr><td> <input id='test1' type='button' value="I'm a button!"></input> </tr></td> </table> As a workaround, I've experimented with using a loop to create a class for each span, rising in increment until jQuery("input[id~=test1]").length, but I can't seem to get anything I do to work. Is there any way to give each matched element an unique ID? My fluency in jQuery is being put to the test! Thanks for any help in advance. Aaron

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• jQuery - Sorting an array?

  - by Probocop

  Hi, I'm using Ajax to get some XML, and then filling in some fields on a form with the results. There is a numerical field on the form and I would like to sort the results by this number (highest first). How would I go about doing this in jQuery? My js function code is currently: function linkCounts() { ws_url = "http://archreport.epiphanydev2.co.uk/worker.php?query=linkcounts&domain="+$('#hidden_the_domain').val(); $.ajax({ type: "GET", url: ws_url, dataType: "xml", success: function(xmlIn){ results = xmlIn.getElementsByTagName("URL"); for ( var i = 0; i < results.length; i++ ) { $("#tb_domain_linkcount_url_"+(i+1)).val($(results[i].getElementsByTagName("Page")).text()); $("#tb_domain_linkcount_num_"+(i+1)).val($(results[i].getElementsByTagName("Links")).text()); } $('#img_linkcount_worked').attr("src","/images/worked.jpg"); }, error: function(){$('#img_linkcount_worked').attr("src","/images/failed.jpg");} }); } The Links tag is the one I'm wanting to sort it on. Thanks For reference the XML that's getting returned is like the following: <?xml version="1.0" encoding="utf-8" standalone="yes"?> <Response> <ResponseCode>1</ResponseCode> <ResponseStatus>OK</ResponseStatus> <ReportId>2</ReportId> <UrlChecked /> <MaxLinks>75</MaxLinks> <PagesFound>121</PagesFound> <URLs> <URL> <Page>http://www.epiphanysolutions.co.uk/blog</Page> <Links>78</Links> </URL> <URL> <Page>http://www.epiphanysolutions.co.uk/blog/</Page> <Links>78</Links> </URL> <URL> <Page>http://www.epiphanysolutions.co.uk/blog/author/daniel-peden/</Page> <Links>78</Links> </URL> <URL> <Page>http://www.epiphanysolutions.co.uk/blog/author/daniel-peden/page/2/</Page> <Links>78</Links> </URL> </URLS> </Response>

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• jQuery multiple class selection

  - by morpheous

  I am a bit confused with this: I have a page with a set of buttons (i.e. elements with class attribute 'button'. The buttons belong to one of two classes (grp1 and grp2). These are my requirements For buttons with class enabled, when the mouse hovers over them, a 'button-hover' class is added to them (i.e. the element the mouse is hovering over). Otherwise, the hover event is ignored When one of the buttons with class grp2 is clicked on (it has to be 'enabled' first), then I disable (i.e. remove the 'enabled' class for all elements with class 'enabled' (should probably selecting for elements with class 'button' AND 'enabled' - but I am having enough problems as it is, so I need to keep things simple for now). This is what my page looks like: <html> <head> <title>Demo</title> <style type="text/css" .button {border: 1px solid gray; color: gray} .enabled {border: 1px solid red; color: red} .button-hover {background-color: blue; } </style> <script type="text/javascript" src="jquery.js"></script> </head> <body> <div class="btn-cntnr"> <span class="grp1 button enabled">button 1</span> <span class="grp2 button enabled">button 2</span> <span class="grp2 button enabled">button 3</span> <span class="grp2 button enabled">button 4</span> </div> <script type="text/javascript"> /* <![CDATA[ */ $(document).ready(function(){ $(".button.enabled").hover(function(){ $(this).toggleClass('button-hover'); }, function() { $(this).toggleClass('button-hover'); }); $('.grp2.enabled').click(function(){ $(".grp2").removeClass('enabled');} }); /* ]]> */ </script> </body> </html> Currently, when a button with class 'grp2' is clicked on, the other elements with class 'grp2' have the 'enabled' class removed (works correctly). HOWEVER, I notice that even though the class no longer have a 'enabled' class, SOMEHOW, the hover behaviour is still applied to these elemets (WRONG). Once an element has been 'disabled', I no longer want it to respond to the hover() event. How may I implement this behavior, and what is wrong with the code above (i.e. why is it not working? (I am still learning jQuery)

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• Supersized image captions - render outside of JavaScript

  - by Sol

  I am using the jQuery supersized script for a full screen slideshow (not the WordPress plugin as this didn't give me enough control). However, one issue that I am trying to tackle is how to render the image caption text outside of the javascript slides[ ] call - and instead, render them within the page div - to improve SEO on the page. My code works fine right now, images and the caption text are correctly displaying, but looking at the source code, there is very little text outside of the javascript (which is bad for SEO), so I would just like to improve it, if possible. I haven't been able to find any other topic on this subject and so far, I've been unsuccessful at improving on the current code, which is as follows; <!-- Supersized 3.2.7 - By Sam Dunn / One Mighty Roar (www.onemightyroar.com) Released under MIT License / GPL License --> <script type="text/javascript"> var slides=[]; <?php $my_query = new WP_Query ( array( 'post_status' => 'publish', 'post_type' => 'featured', //'numberposts' => 5, 'orderby' => 'menu_order', 'order' => 'ASC', 'showposts' => 50 )); while( $my_query->have_posts() ) : $my_query->the_post(); $slink = get_post_meta($post->ID,'FS_link',true); ?> slides.push({image : '<?php echo get_image_path(get_post_meta($post->ID, 'FS_slideimage_src', true)); ?>', title : '<div class="slidecaptioninside"><h1><?php echo the_title(); ?></h1><p><?php echo strip_tags(get_post_meta($post->ID, 'FS_fitemcaption', true)); ?>...<a href="<?php echo $slink;?>">find out more</a></p></div>', url : '<?php echo $slink;?>'}); <?php endwhile; ?> // start supersized JS $j = jQuery.noConflict(); $j(window).load(function() { $j.supersized({ //Functionality slideshow: 1, // ..... additional functions go here... slide_captions : 1, //Slide caption (Pull from "title" in slides array) slides : slides, slide_links : 'blank', progress_bar : 1, mouse_scrub: 1 }); }); </script> <div id="slidecontainer"> <div id="slidecaption"></div> <!--Thumbnail Navigation--> <div id="prevthumb"></div> <div id="nextthumb"></div> <!--additional tray divs here--> </div><!--slidecontainer--> I have tried to get Supersized to output the content into a parent div [div id="supersized"] using $j('#supersized').supersized({ but this doesn't appear to work. Has anyone managed to do this differently to improve page SEO?

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• C#: Label contains no text

  - by Vinzcent

  Hey I would like to get the text out of a label. But the label text is set with Javascript. On the page I can see that there is text in the label, but when I debug it shows this: "". So how do I get the text out of a label that is set with Javascript, at least that is what I think is the problem. My code: <asp:TextBox ID="txtCount" runat="server" Width="50px" Font-Names="Georgia, Arial, sans-Serif" ForeColor="#444444"></asp:TextBox> <ajaxToolkit:NumericUpDownExtender ID="NumericUpDownExtender1" runat="server" Minimum="1" TargetButtonDownID="btnDown" TargetButtonUpID="btnUp" TargetControlID="txtCount" Width="20" /> <asp:ImageButton ID="btnUp" runat="server" AlternateText="up" ImageUrl="Images/arrowUp.png" OnClientClick="setAmountUp()" ImageAlign="Top" CausesValidation="False" /> <asp:ImageButton ID="btnDown" runat="server" AlternateText="down" ImageUrl="Images/arrowDown.png" OnClientClick="setAmountDown()" ImageAlign="Bottom" CausesValidation="False" /> <asp:Label ID="lblKorting" runat="server" /> <asp:Label ID="lblAmount" runat="server" /> <asp:Button ID="btnBestel" runat="server" CssClass="btn" Text="Bestel" OnClick="btnBestel_Click1" /> JS function setAmountUp() { var aantal = document.getElementById('<%=txtCount.ClientID%>').value-0; aantal+=1; calculateAmount(aantal); } function setAmountDown() { var aantal = document.getElementById('<%=txtCount.ClientID%>').value-0; if(aantal > 1) aantal -=1; calculateAmount(aantal); } function calculateAmount(aantal) { var prijs = document.getElementById('<%=lblPriceBestel.ClientID%>').innerHTML -0; var totaal = 0; if(aantal < 2) { totaal = prijs * aantal; document.getElementById('<%=lblKorting.ClientID%>').innerHTML = ""; } else if(aantal >= 2 && aantal < 5) { totaal = (prijs * aantal)*0.95; document.getElementById('<%=lblKorting.ClientID%>').innerHTML = "-5%"; } else if(aantal >= 5) { totaal = (prijs * aantal)*0.90; document.getElementById('<%=lblKorting.ClientID%>').innerHTML = "-10%"; } document.getElementById('<%=lblAmount.ClientID%>').innerHTML = totaal; } C# private OrderBO bestelling; protected void btnBestel_Click1(object sender, EventArgs e) { bestelling = new OrderBO(); bestelling.Amount = Convert.ToInt32(lblAmount.Text); //<--- THIS IS "" in the debugger, but on the page 10 }

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• Setting background-image with javascript

  - by Mattoe3k

  In chrome, safari, and opera setting the background image to an absolute reference such as: "/images/image.png" changes it to "http://sitepath/images/image.png". It does not do this in firefox. Is there any way to avoid this behavior, or is it written into the browser's javascript engine? Using jquery to set the background-image also does this problem. The problem is that I am posting the HTML to a php script that needs the urls in this specific format. I know that setting the image path relative fixes this, but I can't do that. The only other alternative would be to use a regexp. to convert the urls. Thanks. Test this in firefox, and chrome / webkit browser: <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <title>Untitled Document</title> </head> <body> <div style="height:400px;width:400px;background-image:url(/images/images/logo.gif);"> </div> <br /> <br /> <div id="test" style="height:400px;width:400px;"> </div> <script type="text/javascript" src="/javascripts/jquery.js"></script> <script type="text/javascript"> $(document).ready(function(){ $("#test").css('background-image',"url(/images/images/logo.gif)"); alert(document.getElementById('test').style.backgroundImage); }); </script> </body> </html>

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• Create a Counter within a For-Loop?

  - by Todd Hartman

  I am a novice programmer and apologize upfront for the complicated question. I am trying to create a lexical decision task for experimental research, in which respondents must decide if a series of letters presented on the screen make a "word" or "not a word". Everything works reasonably well except for the bit where I want to randomly select a word (category A) or nonword (category B) for each of 80 trials from a separate input file (input.txt). The randomization works, but some elements from each list (category A or B) are skipped because I have used "round.catIndex = j;" where "j" is a loop for each successive trial. Because some trials randomly select from Category A and other from Category B, "j" does not move successively down the list for each category. Instead, elements from the Category A list may be selected from something like 1, 2, 5, 8, 9, 10, and so on (it varies each time because of the randomization). To make a long story short(!), how do I create a counter that will work within the for-loop for each trial, so that every word and nonword from Category A and B, respectively, will be used for the lexical decision task? Everything I have tried thus far does not work properly or breaks the javascript entirely. Below is my code snippet and the full code is available at http://50.17.194.59/LDT/trunk/LDT.js. Also, the full lexical decision task can be accessed at http://50.17.194.59/LDT/trunk/LDT.php. Thanks! function initRounds() { numlst = []; for (var k = 0; k<numrounds; k++) { if (k % 2 == 0) numlst[k] = 0; else numlst[k] = 1; } numlst.sort(function() {return 0.5 - Math.random()}) for (var j = 0; j<numrounds; j++) { var round = new LDTround(); if (numlst[j] == 0) { round.category = input.catA.datalabel; } else if (numlst[j] == 1) { round.category = input.catB.datalabel; } // pick a category & stimulus if (round.category == input.catA.datalabel) { round.itemtype = input.catA.itemtype; round.correct = 1; round.catIndex = j; } else if (round.category == input.catB.datalabel) { round.itemtype = input.catB.itemtype; round.correct = 2; round.catIndex = j; } roundArray[i].push(round); } return roundArray; }

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• color letters in a div

  - by Growler

  I've created a palindrome checker. I want to take it one step further and show the letters being compared as it is being checked. HTML: <p id="typing"></p> <input type="text" id="textBox" onkeyup="pal(this.value);" value="" /> <div id="response"></div> <hr> <div id="palindromeRun"></div> JS: To do this, I run the recursive check... Then if it is a palindrome, I run colorLetters(), which I'm trying to highlight in green each letter as it is being checked. Right now it is just rewriting palindromeRun's HTML with the first letter. I know this is because of the way I'm resetting its HTML. I don't know how to just grab the first and last letter, change only those letters' css, then increment i and j on the next setTimeout loop. var timeout2 = null; function pal (input) { var str = input.replace(/\s/g, ''); var str2 = str.replace(/\W/, ''); if (checkPal(str2, 0, str2.length-1)) { $("#textBox").css({"color" : "green"}); $("#response").html(input + " is a palindrome"); $("#palindromeRun").html(input); colorLetters(str2, 0, str2.length-1); } else { $("#textBox").css({"color" : "red"}); $("#response").html(input + " is not a palindrome"); } if (input.length <= 0) { $("#response").html(""); $("#textBox").css({"color" : "black"}); } } function checkPal (input, i, j) { if (input.length <= 1) { return false; } if (i === j || ((j-i) == 1 && input.charAt(i) === input.charAt(j))) { return true; } else { if (input.charAt(i).toLowerCase() === input.charAt(j).toLowerCase()) { return checkPal(input, ++i, --j); } else { return false; } } } function colorLetters(myinput, i, j) { if (timeout2 == null) { timeout2 = setTimeout(function () { console.log("called"); var firstLetter = $("#palindromeRun").html(myinput.charAt(i)) var secondLetter = $("#palindromeRun").html(myinput.charAt(j)) $(firstLetter).css({"color" : "red"}); $(secondLetter).css({"color" : "green"}); i++; j++; timeout2=null; }, 1000); } } Secondary: If possible, I'd just like to have it colors the letters as the user is typing... I realize this will require a setTimeout on each keyup, but also am not sure how to write this.

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• json null error help in php

  - by bobby

  I get 'json is null' as error My php file: <?php if (isset($_REQUEST['query'])) { $query = $_REQUEST['query']; $url='https://www.googleapis.com/urlshortener/v1/'; $key='ApiKey'; $result= $url.($query).$key; $ch = curl_init($result); curl_setopt($ch, CURLOPT_HEADER, 0); curl_setopt($ch, CURLOPT_POST, 1); curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1); curl_setopt($ch,CURLOPT_CONNECTTIMEOUT,1); $resp = curl_exec($ch); curl_close($ch); echo $resp; } ?> My html: <html> <head> <script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.4.2/jquery.min.js"></script> <script type="text/javascript"> $(document).ready(function(){ // when the user clicks the button $("button").click(function(){ $.getJSON("shortner.php?query="+$('#query').attr("value"),function(json){ $('#results').append('<p>Id : ' + json.id+ '</p>'); $('#results').append('<p>Longurl: ' + json.longurl+ '</p>'); }); }); }); </script> </head> <body> <input type="text" value="Enter a place" id="query" /><button>Get Coordinates</button> <div id="results"></div> Edited : <?php if (isset($_REQUEST['query'])) { $query = $_REQUEST['query']; $url='https://www.googleapis.com/urlshortener/v1/'; $key='Api'; $key2='?key='; $result= $url.$query.$key2.$key; $requestData= json_encode($result); echo var_dump($query); $ch = curl_init($requestData); curl_setopt($ch, CURLOPT_HEADER, 0); curl_setopt($ch, CURLOPT_POST, 1); curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1); curl_setopt($ch,CURLOPT_CONNECTTIMEOUT,1); $resp = curl_exec($ch); curl_close($ch); echo $resp; } ?>

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• Call PHP Function in jQuery (var)

  - by l3gion

  Hello, I'm facing a small problem that I can't solve by myself. I have this php function: function intervalo_manha(){ $que="select id_intervalo,data_15 from intervalo_manha order by id_intervalo"; $re=mysql_query($que); $object.="<select>"; $object.="<option></option>"; while(list($id_intervalo, $data_15)=mysql_fetch_row($re)) { $object.= "<option value=\"".$id_intervalo."\">".$data_15."</option>"; } $object.="</select>"; return $object; } This function return a select with information from database. I also have this js function: $(document).ready(function() { var destTable = $("#dataTable"); $("#btnAdd").click(function() { var newRow = $("<tr style='margin-left:-60px'><td><INPUT type='checkbox' name='chk'/></td><td><INPUT type='text' name='txt[]' id='txt'/></td><td></td></tr>"); $("#dataTable").append(newRow); newRow.find('input').autocomplete("get_cols_name.php", { width: 260, matchContains: true, selectFirst: false }); }); }); This one will add a new row to my table, and for each new input will "activate" autocomplete. What I want to do is, instead of this: var newRow = $("<tr style='margin-left:-60px'><td><INPUT type='checkbox' name='chk'/></td><td><INPUT type='text' name='txt[]' id='txt'/></td><td></td></tr>"); I would like to have something like this: var newRow = $("<tr style='margin-left:-60px'><td><INPUT type='checkbox' name='chk'/></td><td><INPUT type='text' name='txt[]' id='txt'/></td><td><?php echo intervalo_manha(); ?></td></tr>"); Calling php function directly will return nothing, and I can't do anything. Is there any way to accomplish this? Thank you

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• Jetty servlet respons to Ajax always empty

  - by chris

  Hi I try to run a java server on Jetty which should respond to an ajax call. Unfortunately the response seems to be empty when I call it with ajax. When I call http://localhost:8081/?id=something I get an answer. The Java Server: public class Answer extends AbstractHandler { public void handle(String target, Request baseRequest, HttpServletRequest request, HttpServletResponse response) throws IOException, ServletException { String id = request.getParameter("id"); response.setContentType("text/xml"); response.setHeader("Cache-Control", "no-cache"); response.setContentLength(19+id.length()); response.setStatus(HttpServletResponse.SC_OK); response.getWriter().write("<message>"+id+"</message>"); //response.setContentType("text/html;charset=utf-8"); response.flushBuffer(); baseRequest.setHandled(true); } public static void main(String[] args) throws Exception { Server server = new Server(8081); server.setHandler(new Answer()); server.start(); server.join(); } } The js and html: <html> <head> <script> var req; function validate() { var idField = document.getElementById("userid"); var url = "validate?id=" + encodeURIComponent(idField.value); if (typeof XMLHttpRequest != "undefined") { req = new XMLHttpRequest(); } else if (window.ActiveXObject) { req = new ActiveXObject("Microsoft.XMLHTTP"); } req.open("GET", "http://localhost:8081?id=fd", true); req.onreadystatechange = callback; req.send(null); } function callback() { if (req.readyState == 4) { if (req.status == 200) { var message = req.responseXML.getElementsByTagName("message")[0]; document.getElementById("userid").innerHTML = "message.childNodes[0].nodeValue"; } } } </script> </head> <body onload="validate('foobar')"> <div id="userid">hannak</div> </body> </html> I'm actually don't know what I'm doing wrong here. Maybe someone has a good idea. greetings chris

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• [NHibernate and ASP.NET MVC] How can I implement a robust session-per-request pattern in my project,

  - by Guillaume Gervais

  I'm currently building an ASP.NET MVC project, with NHibernate as its persistance layer. For now, some functionnalities have been implemented, but only use local NHibernate sessions: each method that accessed the database (read or write) needs to instanciate its own NHibernate session, with the "using()" directive. The problem is that I want to leverage NHibernate's Lazy-Loading capabilities to improve the performance of my project. This implies an open NHibernate session per request until the view is rendered. Furthermore, simultaneous request must be supported (multiple Sessions at the same time). How can I achieve that as cleanly as possible? I searched the Web a little bit and learned about the session-per-request pattern. Most of the implementations I saw used some sort of Http* (HttpContext, etc.) object to store the session. Also, using the Application_BeginRequest/Application_EndRequest functions is complicated, since they get fired for each HTTP request (aspx files, css files, js files, etc.), when I only want to instanciate a session once per request. The concern that I have is that I don't want my views or controllers to have access to NHibernate sessions (or, more generally, NHibernate namespaces and code). That means that I do not want to handle sessions at the controller level nor the view one. I have a few options in mind. Which one seems the best ? Use interceptors (like in GRAILS) that get triggered before and after the controller action. These would open and close sessions/transactions. Is it possible in the ASP.NET MVC world? Use the CurrentSessionContext Singleton provided by NHibernate in a Web context. Using this page as an example, I think this is quite promising, but that still requires filters at the controller level. Use the HttpContext.Current.Items to store the request session. This, coupled with a few lines of code in Global.asax.cs, can easily provide me with a session on the request level. However, it means that dependencies will be injected between NHibernate and my views (HttpContext). Thank you very much!

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• Linking to a section of a site that is hidden by a hide/show JavaScript function

  - by hollyb

  I am using a bit of JavaScript to show/hide sections of a site when a tab is clicked. I'm trying to figure out if there is a way I can link back to the page and have a certain tab open based on that link. Here is the JS: var ids=new Array('section1','section2','section3','section4'); function switchid(id, el){ hideallids(); showdiv(id); var li = el.parentNode.parentNode.childNodes[0]; while (li) { if (!li.tagName || li.tagName.toLowerCase() != "li") li = li.nextSibling; // skip the text node if (li) { li.className = ""; li = li.nextSibling; } } el.parentNode.className = "active"; } function hideallids(){ //loop through the array and hide each element by id for (var i=0;i<ids.length;i++){ hidediv(ids[i]); } } function hidediv(id) { //safe function to hide an element with a specified id document.getElementById(id).style.display = 'none'; } function showdiv(id) { //safe function to show an element with a specified id document.getElementById(id).style.display = 'block'; } And the HTML <ul> <li class="active"><a onclick="switchid('section1', this);return false;">One</a></li> <li><a onclick="switchid('section2', this);return false;">Two</a></li> <li><a onclick="switchid('section3', this);return false;">Three</a></li> <li><a onclick="switchid('section4', this);return false;">Four</a></li> </ul> <div id="section1" style="display:block;"> <div id="section2" style="display:none;"> <div id="section3" style="display:none;"> <div id="section4" style="display:none;"> I haven't been able to come up with a way to link back to a specific section. Is it even possible with this method? Thanks!

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• Google Maps API - Marker not showing

  - by popnbrown

  I'm trying to add markers for every single row from a table, that sits on the page. The page is http://www.sravanks.com/first/2013ftcmap.php This is the JS code that's loading the markers: $(document).ready(function() { var mapOptions = { center: new google.maps.LatLng(39.740, -89.503), zoom: 7 }; var map = new google.maps.Map(document.getElementById("map-canvas"), mapOptions); var infowindow = new google.maps.InfoWindow(); /* City Markers */ var cityCircle = new Array(); var i = 0; $.each($('.events tr'), function(index, value) { var name = $(this).find('td:first()').html(); var address = $(this).find('.address').html(); var linkUrl = "http://www.sravanks.com/first/geocode.php?address=" + address; $.ajax({ url: linkUrl }).done(function(data){ var json = $.parseJSON(data.substring(0, data.length-1)); lat = json.results[0].geometry.location.lat; lng = json.results[0].geometry.location.lng; var latlng = new google.maps.LatLng(lat, lng); var marker = new google.maps.Marker({ position: latlng, map: map, icon: 'map-pointer-medium.gif' }); google.maps.event.addListener(marker, 'click', function() { infowindow.setContent(name); infowindow.open(map, marker); cityCircle[i] = new google.maps.Circle({strokeColor: '#00FF00', strokeOpacity: 0.8, strokeWeight: 2, fillColor: '#00FF00', fillOpacity: 0.35, map: map, center: latlng, radius: 144841}); i++; }); }); }); /*Team Markers*/ var markers = {}; var teamName, teamNumber, lat, lng, content; $.each($('.list tr'), function(index, value) { teamName = $(this).find('td.name').html(); teamNumber = $(this).find('td.number').html(); markers[teamNumber] = {}; lat = parseFloat($(this).find('td.lat').html()); lng = parseFloat($(this).find('td.lng').html()); content = "Name: " + teamName + "<br />Number: " + teamNumber; markers[teamNumber]['latlng'] = new google.maps.LatLng(lat, lng); markers[teamNumber]['marker'] = new google.maps.Marker({ position: markers[teamNumber]['latlng'], map: map }); google.maps.event.addListener(markers[teamNumber]['marker'], 'click', function() { infowindow.setContent(content); infowindow.open(map, markers[teamNumber]['marker']); }); }); google.maps.event.addListener(infowindow, 'closeclick', function() { for(var i=0;i<cityCircle.length;i++){ cityCircle[i].setMap(null); } }); }); I've got no errors, but the Team Markers do not show up. The strange thing is that the City Markers do show up. Some more info, the City Markers ajax call is just to a proxy that calls the google geocoding api. Again the link's at http://www.sravanks.com/first/2013ftcmap.php

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• I have to do two seemingly mutually exclusive things on leaving an asp:textbox. Please help me get

  - by aape

  This project has gone from being a simple '99 Ford F-150 to the Homer. I've got controls with a gridview with textboxes for data entry. All the user controls on the pages are in AJAX updatepanels. User types in a database column or budget entity or some other financial thing they want to include in the report. The textboxes in the gridview have autopostback = true set. overly long background info When the user leaves the textbox, during the postback (triggered by onTextChanged) I do some validation back on the server on their entry - regexs, do they have rights to that column, is that column locked, etc. If it fails, I put a error message next to the textbox. If it passes, I wipe out any title or error that used to be next to the code. Focus is getting lost from the postback if they're tabbing out of the box, rather than going to the next textbox in the gridview. So to fix that I need, if their leaving the tb via the tab key, to also figure out what textbox or gridviewrow they're on, if they're not on the last row, and after the validation and labeling, put the focus on the textbox in the next row. I can't figure out how, in ontextchanged, to find what caused me to leave the textbox, so I'm thinking use javascript onkeyup to test the key pressed and then find the next box etc, but the ontextchanged fires first and then the js never does, and also, since the control is all AJAXed, the javascript can't find the textboxes because when you enter the page everything is collapsed (the requirements people loooove to collapse and expand things), and so when it's expanded, all the 'new' textboxes are up in the viewstate stuff in the page source, and not down where javascript can see them. The questions So I'm wondering if I can have an onblur in the javascript that can trigger a postback where I can do my validation and such, and either 1) include the keypressed or pick it out of sender in the event or 2) followup the onblur with onkeyup and somehow figure out what textbox is next on the grid and throw focus there. Or, is there another .NET based approach that could work for this? In terms of tearing the whole thing down and starting from scratch, I couldn't sell that to the bosses, I'm past the point of no return as far as that goes.

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• Can't figure out the color of an svg element

  - by yass

  I have a very simple HTML page, viewable on gh-pages with the following code: <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en"> <head> <meta http-equiv="content-type" content="text/html; charset=UTF-8"> <link href="style.css" media="screen" rel="stylesheet" type="text/css"> <script src='http://ajax.googleapis.com/ajax/libs/jquery/1/jquery.min.js'> </script> </head> <body> <div id="page"> <div id="content"> <div id="heatmap"> <svg style="margin-left: 80px; color: rgb(255, 255, 255);" width="800" height="880"> <g transform="translate(80,80)"> <rect style="color: rgb(255, 255, 255);" height="720" width="720"> </rect> </g> </svg> </div> </div> </div> </body> </html> with the following CSS: body { background-color: #FFFFFF; font-family: Arial, Helvetica, sans-serif; font-size: 14px; color: #FFFFFF; } #wrapper { margin: 0 auto; padding: 0; } #page { width: 1000px; margin: 0 auto; padding: 40px 0px 0px 0px; } #content { float: left; width: 660px; padding: 0px 0px 0px 0px; background: #FFFFFF; } I expect the rectangle, 'svg rect' to be the color #FFFFFF, or white. But it shows up as some other color. I opened it up in firebug, and it shows the computed color to be #FFFFF:

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• Android browser touch events stop display being updated inc. canvas/elements - How to work around?

  - by Ed Kirk

  On some android's native browser touching the page seems to stop the display from being updated until the finger is released. This occurs for both html element based animation (switching classes) and for canvas based animation. It does not however stop normal js execution and other events are fired as normal. On devices with this problem the dolphin browser also seems effected (not firefox though). Touchstart/move both have preventDefault() fired as well as stopPropergation(), cancelBubble = true; and e.returnValue = false;. In the CSS webkit selection has also been disabled. The page will not scroll. A similar question has been asked here: Does Android browser lock DOM on touchStart? but I'd like to find out if this behaviour can be overcome, or at least to discover what devices will be effected by the problem, is it a device or version android issue? If you cannot answer the question running the demo and reporting your experience along with your device model and useragent (displayed at bottom of demo page) as a comment might help others or myself answer the question. Here is a demo and steps to reproduce the behaviour. A QR code for the link can be found here https://s3-eu-west-1.amazonaws.com/canvas-test-pd/tmp.png. https://s3-eu-west-1.amazonaws.com/canvas-test-pd/index.html The web page has a canvas at the top and a div with a background image at the bottom. Every second the canvas is cleared and a different image displayed and the div has it's class switched (both toggle between 0 and 1 pngs). Once this has toggled a few times place your finger on the canvas (the top grey box) and hold it there. Wait to see if the animation continues (sometimes it will once or twice then stops) and if there are any visual distortions. Update It seems that the Galaxy Tab running 3.2 requires handlers for touchstart/end of document, not just required divs for the screen to continue updating the display. Thanks jimpic. I'm starting to believe it's an issue caused by manufacturers skins, although this is difficult to prove.

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• jQuery Accordion /Tabs - Call different function upon load of content

  - by Scott

  I have the following markup: <body> <div id="tabs" style="float: left"> <ul> <li><a href="ajax/question_0.html" title="Question 1"><span>Question 1</span></a></li> <li><a href="ajax/question_1.html" title="Question 2"><span>Question 2</span></a></li> <li><a href="ajax/question_2.html" title="Question 3"><span>Question 3</span></a></li> <li><a href="ajax/question_3.html" title="Question 4"><span>Question 4</span></a></li> <li><a href="ajax/question_4.html" title="Question 5"><span>Question 5</span></a></li> <li><a href="ajax/question_5.html" title="Question 6"><span>Question 6</span></a></li> </ul> <div id="dynamicContent"> </div> </div> <div class="demo-description"> <p>Click tabs to see answers to Questions</p> </div> </body> I would like to utilize an accordion or the tabs plugin from the UI. Upon completion of the load event, I'd like to call a JavaScript function, but a different function for each tab -- almost like calling onDocumentReady for a page. I have the following JavaScript: $(function() { $('#tabs').tabs().bind('tabsselect', function(event, ui) { console.log("Loading: ajax/question_" + ui.index + ".html"); return true; //Ensure that the tab gets selected }); ); That's properly loading the Ajax file and all, but whenever I attempt to do something such as evaluating a statement in the JS, it seems to be ignored. Is there any way I can do this, so that once the file is loaded my function is called -- needs to be a different function for each tab.

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• javascript error: variable is not defined

  - by Hristo

  to is not defined [Break on this error] setTimeout('updateChat(from, to)', 1); I'm getting this error... I'm using Firebug to test and this comes up in the Console. The error corresponds to line 71 of chat.js and the whole function that wraps this line is: function updateChat(from, to) { $.ajax({ type: "POST", url: "process.php", data: { 'function': 'getFromDB', 'from': from, 'to': to }, dataType: "json", cache: false, success: function(data) { if (data.text != null) { for (var i = 0; i < data.text.length; i++) { $('#chat-box').append($("<p>"+ data.text[i] +"</p>")); } document.getElementById('chat-box').scrollTop = document.getElementById('chat-box').scrollHeight; } instanse = false; state = data.state; setTimeout('updateChat(from, to)', 1); // gives error }, }); } This links to process.php with function call getFromDB and the code for that is: case ('getFromDB'): // get the sender and receiver user IDs from their user names $from = mysql_real_escape_string($_POST['from']); $query = "SELECT `user_id` FROM `Users` WHERE `user_name` = '$from' LIMIT 1"; $result = mysql_query($query) or die(mysql_error()); $row = mysql_fetch_assoc($result); $fromID = $row['user_id']; $to = mysql_real_escape_string($_POST['to']); $query = "SELECT `user_id` FROM `Users` WHERE `user_name` = '$to' LIMIT 1"; $result = mysql_query($query) or die(mysql_error()); $row = mysql_fetch_assoc($result); $toID = $row['user_id']; $query = "SELECT * FROM `Messages` WHERE `from_id` = '$fromID' AND `to_id` = '$toID' LIMIT 1"; $result = mysql_query($query); while($row = mysql_fetch_assoc($result)) { $text[] = $line = $row['message']; $log['text'] = $text; } break; So I'm confused with the line that is giving the error. setTimeout('updateChat(from,to)',1); aren't the parameters to updateChat the same parameters that came into the function? Or are they being pulled in from somewhere else and I have to define to and from else where? Any ideas how to fix this error? Thanks, Hristo

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• jQuery UI problem: why do the elements go flying around the screen?

  - by George Edison

  Yes, I know the title sounds a little suspicious. I will try to explain this the best I can... The code below is supposed to have the blue div slide down beside the red div. The first time you hit the Show the div button, it works. Also, the Hide the div works. Then when I click to show the div again, it appears to the right of where it is supposed to be! Why is this?!? Note: You can find a live example of the code here <html> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"> <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en"> <head> <title>Demo</title> <style type='text/css'> #red { background-color: red; width: 200px; height: 150px; position: absolute; } #blue { background-color: blue; width: 150px; height: 200px; position: absolute; display: none; } #tester_1 { top: 300px; left: 300px; position: absolute; } #tester_2 { top: 350px; left: 300px; position: absolute; } </style> </head> <script type="text/javascript" src="jquery.js"></script> <script type='text/javascript'> function Show() { $('#blue').position({ of: $('#red'), my: 'left top', at: 'right top'}).slideDown(); } function Hide() { $('#blue').hide(); } </script> <body> <div id='red'></div> <div id='blue'></div> <button id='tester_1' onclick='Show()'>Show the <kbd>div</kbd></button> <button id='tester_2' onclick='Hide()'>Hide the <kbd>div</kbd></button> </body> </html>

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• jQuery function execute on Button Click and Enter/Return (key)

  - by Alvin Jones

  I'm trying to create a little search box that allows you to search Twitter based on the keyword you enter in the input field. While it's work, it only works if you press the Submit button. I would also like to be able to press the Enter or Return key to initiate the search. I've tried using the .sumbit function and wrapping my input around a form element with no success. Any insight would be greatly appreciate! Live example: http://tinyurl.com/84axyym <script src="http://ajax.googleapis.com/ajax/libs/jquery/1/jquery.min.js"></script> <script> $(document).ready(function(){ function(data) { $('#startSearch').click(function(){ $('#tweets .results').remove(); var searchTerm = 'http://search.twitter.com/search.json?q=' + $('#twitterSearch').val() + '&callback=?' $.getJSON(searchTerm, function(data) { $.each(data.results, function() { $('<div class="results"></div>') .hide() .append('<a class="userPicLink" href="http://twitter.com/' + this.from_user + '">' + '<img class="userImg" src="' + this.profile_image_url + '">' + '</a>') .append('<span class="userName">' + '<a href="http://twitter.com/' + this.from_user + '">' + this.from_user + '</span>') .append('<span class="userText">' + this.text + '</span>') .append('<time class="textTime">' + relTime(this.created_at) + '</time>') .appendTo('#tweets') .fadeIn(); }); }); </script> <body> <label id="searchLabel" for="twitterSearch">Search</label> <input type="search" list="searchSugg" id="twitterSearch" placeholder="css3 animation" required aria-required="true"> <input id="startSearch" type="submit"> <datalist id="searchSugg"> <option value="css3 mulitple backgrounds"> <option value="html5 video"> <option value="responsive web design"> <option value="twitter api"> </datalist> <div id="tweets"> </div> </body>

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• Serialize JavaScript's navigator object

  - by kappa

  Hi, I'm creating a page to help diagnose the problem our users are experiencing with our web pages (you know, asking a user "What browser are you using?" usually leads to "Internet"). This page already submits to me all the HTTP headers and now I'm trying to have JavaScript give some more informations, so I thought it would be great to have the user's navigator JavaScript object and I started looking how to serialize it so I can submit it through a form. The problem is I'm not able to serialize the navigator object using any JSON library I know of, everyone returns an empty object (?!), so I decided to write an ad-hoc serializer. You can find the code here: <!DOCTYPE html> <html> <head> <script src="https://ajax.googleapis.com/ajax/libs/jquery/1.5.0/jquery.min.js" type="text/javascript"></script> <script type="text/javascript"> function serialize (object) { var type = typeof object; if (object === null) { return '"nullValue"'; } if (type == 'string' || type === 'number' || type === 'boolean') { return '"' + object + '"'; } else if (type === 'function') { return '"functionValue"'; } else if (type === 'object') { var output = '{'; for (var item in object) { if (item !== 'enabledPlugin') { output += '"' + item + '":' + serialize(object[item]) + ','; } } return output.replace(/\,$/, '') + '}'; } else if (type === 'undefined') { return '"undefinedError"'; } else { return '"unknownTypeError"'; } }; $(document).ready(function () { $('#navigator').text(serialize(navigator)); }); </script> <style type="text/css"> #navigator { font-family: monospaced; } </style> <title>Serialize</title> </head> <body> <h1>Serialize</h1> <p id="navigator"></p> </body> </html> This code seems to work perfectly in Firefox, Opera, Chrome and Safari but (obviously) doesn't work in Internet Explorer (at least version 8.0), it complains that "Property or method not supported by the object" at line for (var item in object) {. Do you have any hint on how to fix the code or how to reach the goal (serialize the navigator object) by other means?

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