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• How to use jquery to remove <div> in a table?

  - by Pentatonic

  I'm trying to remove a few rows surrounded by a div, but it doesn't work, why? $(function(){ $("#div1").empty(); }); <table id="tbl" border="1px"> <thead> ... </thead> <tbody id="tblBody"> <div id="div1"> <tr id="tr1"> <td> row1 </td> </tr> <tr> <td> row2 </td> </tr> </div> </tbody> </table>

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• Problem setting focus to validationsummary control after validation

  - by Ed

  Hi, I have a validationsummary control which displays the summary of a few validationrequired controls and all of them belong to a validationgroup. My submit button also has the same validationgroup so it validates everything upon it being clicked. The problem i am having is setting the focus to the validationsummary control after validation occurs when my submit button is clicked. The focus goes to the top of my webform. I need the focus to be put at the validationsummary control. How do i achieve this? FYI:SetFocusOnError="true" did not work. Thanks for reading.

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• Better way to call superclass method in ExtJS

  - by Rene Saarsoo

  All the ExtJS documentation and examples I have read suggest calling superclass methods like this: MyApp.MyPanel = Ext.extend(Ext.Panel, { initComponent: function() { // do something MyPanel specific here... MyApp.MyPanel.superclass.initComponent.call(this); } }); I have been using this pattern for quite some time and the main problem is, that when you rename your class then you also have to change all the calls to superclass methods. That's quite inconvenient, often I will forget and then I have to track down strange errors. But reading the source of Ext.extend() I discovered, that instead I could use the superclass() or super() methods that Ext.extend() adds to the prototype: MyApp.MyPanel = Ext.extend(Ext.Panel, { initComponent: function() { // do something MyPanel specific here... this.superclass().initComponent.call(this); } }); In this code renaming MyPanel to something else is simple - I just have to change the one line. But I have doubts... I haven't seen this documented anywhere and the old wisdom says, I shouldn't rely on undocumented behaviour. I didn't found a single use of these superclass() and supr() methods in ExtJS source code. Why create them when you aren't going to use them? Maybe these methods were used in some older version of ExtJS but are deprecated now? But it seems such a useful feature, why would you deprecate it? So, should I use these methods or not?

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• Using jQuery, hide a textbox if a radio button is selected

  - by Blankman

  I have 2 radio buttons, what I want is if a user selects the top radio button then hide a textbox. Not sure how to bind an event to a radio button.

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• JQuery - Make my script work?

  - by JasonS

  Hi, I have written a script. It does work! It's just a bit rubbish. Could someone tell me where I am going wrong. Basically, I have a 5 star rating box. When the mouse hovers over the various parts of the box I need the stars to change. Currently the stars only change when you move your mouse over and out of the element. I need the stars to change while the mouses within the element. I think the problem is with the event but I have tried a couple and it seems to make no difference. $(".rating").mouseover(function(e) { // Get Element Position var position = $(this).position(); var left = position.left; // Get mouse position var mouseLeft = e.pageX; // Get Actual var actLeft = mouseLeft - left; $(".info").html(actLeft); if (actLeft < 20) { $(this).attr('style', 'background-position:0;'); } else if (actLeft < 40) { $(this).attr('style', 'background-position:0 -20px;'); } else if (actLeft < 60) { $(this).attr('style', 'background-position:0 -40px;'); } else if (actLeft < 80) { $(this).attr('style', 'background-position:0 -60px;'); } else { $(this).attr('style', 'background-position:0 -80px;'); } });

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• innter.HTML not working after submit button is clicked

  - by user1781453

  I am trying to get the innerHTML to change to what is in the end of the function "calculate" but nothing happens once I hit submit. Here is my code: Pizza Order Form .outp {border-style:solid;background-color:white; border-color:red;padding:1em; border-width: .5em;} .notes {font-size:smaller;font-style:italic;} p {margin-left: 15%; width: 65%;} textarea {resize : none;} </style> function calculate(){ var type; var newline=""; var sum=0; var toppings=""; if( document.getElementById("small").checked==true){ type="Small Pizza"; sum+=4; } if( document.getElementById("medium").checked==true){ type="Medium Pizza"; sum+=6; } if( document.getElementById("large").checked==true){ type="Large Pizza"; sum+=8; } if( document.getElementById("pepperoni").checked==true){ toppings=toppings+"pepperoni, "; sum+=0.75; } if( document.getElementById("olives").checked==true){ toppings=toppings+"olives, "; sum+=0.6; } if( document.getElementById("sausage").checked==true){ toppings=toppings+"sausage, "; sum+=0.75; } if( document.getElementById("peppers").checked==true){ toppings=toppings+"peppers, "; sum+=0.5; } if( document.getElementById("onions").checked==true){ toppings=toppings+"onions, "; sum+=0.5; } if( document.getElementById("cheese").checked==true){ toppings=toppings+"Cheese Only, "; } var length = toppings.length; toppings = toppings.slice(0,length-2); document.getElementById("opta").innerHTML = type+newline+"Toppings:"+newline+toppings+newline+"Price - $"+sum; } Joe's Pizza Palace On-line Order Form <p id = "op" class = "outp" > <b /> Select the size Pizza you want: &nbsp;&nbsp; <input type="radio" name = "size" id="small" value = "small"> Small - $4.00 <b /> <input type="radio" name = "size" id="medium" value = "medium"> Medium - $6.00 <b /> <input type="radio" name = "size" id="large" value = "large"> Large - $8.00 <b /> </p> <p id = "op1" class = "outp" > <b /> Select the toppings: &nbsp;&nbsp; <input type="checkbox" name = "size" id="pepperoni" value = "pepperoni"> Pepperoni ($0.75) <b /> <input type="checkbox" name = "size" id="olives" value = "olives"> Olives ($0.60) <b /> <input type="checkbox" name = "size" id="sausage" value = "sausage"> Sausage ($0.75) <b /> <br /> <input type="checkbox" name = "size" id="peppers" value = "peppers"> Peppers ($0.50) <b /> <input type="checkbox" name = "size" id="onions" value = "onions"> Onions ($0.50) <b /> <input type="checkbox" name = "size" id="cheese" value = "cheese"> Cheese Only <b /> To obtain the price of your order click on the price button below: <br /><br /> <input type="button" align = "left" onclick="calculate();" value="Price (Submit Button)"/> <input type="reset" align = "left" value="Clear Form"/> <br /><br /> <textarea class="outp3" id="opta" style="border-color:black;" rows="6" cols="40" > </textarea>

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• Trying to modify the text of a document onkeydown is inserting text incorrectly.

  - by Benny

  I have the following html: <html> <head> <script> function myKeyDown() { var myDiv = document.getElementById('myDiv'); myDiv.innerHTML = myDiv.innerHTML.replace(/(@[a-z0-9_]+)/gi, '<strong>$1</strong>'); } function init() { document.addEventListener('keydown', myKeyDown, false); document.designMode = "on"; } window.onload = init; </script> </head> <body> <div id="myDiv"> This is my variable name: @varname. If I type here things go wrong... </div> </body> </html> My goal is to do a kind of syntax highlighting on edit, to highlight variable names that begin with an @ symbol. However, when I edit the document's body, the function runs but the cursor is automatically shifted to the beginning of the body before the keystroke is performed. My hypothesis is that the keypress event is trying to insert the new character at a specified index, but when I run the replace function the indices get messed up so it defaults the character insertion point to the beginning. I'm using Firefox to test by the way. Any help would be appreciated. Thanks, B.J.

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• error on connecting to the server : socket io is not defined

  - by max

  i know there's been couple of question about the same problem , i've already check them . i have very simple node.js chat app i have a server running on 8000 port and it works fine my client pages are html , they are running on apache and i'm using socket.io to connect them to the server and it works fine on the local host but when i upload the app on the server i keep on getting this error in the firebug io is not defined var socket = io.connect('http://atenak.com:8000/'); or sometimes it doesn't show that but when i try to broadcast message from cliend i get this error : socket is undefined socket.emit('msg', { data: msg , user:'max' }); the only difference is i've changed the localhost with atenak.com ! here is my html code var socket = io.connect('http://atenak.com:8000/'); var user = 'jack'; socket.on('newmsg', function (data) { if(data.user == user ) { $('#container').html(data.data); } }); function brodcast(){ var msg = $('#fild').val(); socket.emit('msg', { data: msg , user:'max' }); } </script> </head> <body> <div id="container"> </div> <input id="fild" type="text"> <input name="" type="button" onClick="brodcast();"> </body> i have included the sockt.io.js and server is running ok which means socket.io is installed on the server here is the live page http://atenak.com/client.html

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• Dashcode newbie question: Change a button's label programmatically

  - by Koning Baard XIV

  Hi all! I'm new to Mac OS X Dashboard developement. Now, I have a button with id b_start. When that button is clicked, I want the label of the button to change to "Round". Now I have tried these, but none of them work: document.getElementById("b_start").label = "Round"; document.getElementById("b_start").text = "Round"; document.getElementById("b_start").innerText = "Round"; document.getElementById("b_start").object.setValue("Round"); document.getElementById("b_start").value = "Round"; Does anyone how I can change the button's label? Thanks in advance.

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• Defining functions and if statement problems

  - by David Fairbairn

  I'm having a problem with two functions and an if statement. I'm being told the functions go and postcodeChange are not defined. I'm also being told flag is an unexpected identifier at if flag == 1. Any idea where I am going wrong? Thank you. function postcodeChange(){ document.getElementById("goButton").onclick = distanceCheck; } function distanceCheck(){ var distance = document.getElementById("distance").value var patt1=new RegExp("^[0-9]+(\.[0-9]{1})?$"); var out = patt1.exec(distance); if (out == null) { //distance is not a valid number document.getElementById("distanceFlag").value = 1 } else { //distance is valid number document.getElementById("distanceFlag").value = 0 } function go(){ var flag = document.getElementById("distanceFlag").value if flag == 1 { alert("Distance is not valid- enter a number with no more than one decimal point"); } else{ popSubmit('#fa Care Provider Search Go','','0'); } }

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• Undesired "flashing" in Jquery dropdown menu?

  - by Tom

  Hi, I've got the following piece of Jquery: $("#collapse-menu > li > a").click(function() { $(this).toggleClass("expanded").toggleClass("collapsed").find("+ ul").slideToggle("medium"); }); What it basically does is expands or collapses a menu of nested "lists" which contain dropdowns (simplified example): <ul id="collapse-menu"> <li><a class="expanded">Basic Details</a> <ul> <li> <select> .... </select> </li> <li> <select> .... </select> </li> The code works absolutely fine EXCEPT when a large value is selected in any of the dropdowns. At that point, when clicked, the menu will still expand/collapse correctly but "flash" quickly while doing so, as if the entire element was being reset somehow. The data itself is fine but it's the flashing that's unwanted. The strange thing is that if a small value is selected in a dropdown, there's no flashing. When a large value is selected (say, above 30 in an age dropdown of 18-99), the flashing starts happening. Can anyone tell me why this is happening? Or whether there's something not right about the Jquery that's causing this. Thanks. UPDATE: Adding a bounty to this. Have tried a few similar plugins/solutions out there on the net but they all seem to suffer from this "flashing" problem when large dropdown values are selected by default. If it helps, here's a typical similar solution: http://www.i-marco.nl/weblog/jquery-accordion-menu/index_collapsed.html# ... but it suffers from the same problem when dropdowns are added inside the accordion. I hope someone has a clean solution, instead of needing to hack this somehow.

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• How can I find out if an data- attribute is set to an empty value?

  - by Stephan Wagner

  Is there a way to find out if an data- attribute is set to an empty value or if it is not set at all? See this fiddle example (Check the console when clicking on the elements): http://jsfiddle.net/StephanWagner/yy8qvwfp/ <div onclick="console.log($(this).attr('data-test'))">undefined</div> <div data-test="" onclick="console.log($(this).attr('data-test'))">empty</div> <!-- this one will also return an empty value --> <div data-test onclick="console.log($(this).attr('data-test'))">null</div> <div data-test="value" onclick="console.log($(this).attr('data-test'))">value</div> Im having the issue with the third example. I need to know if the attribute actually is set to an empty value or if it is not set at all. Is that actually possible? EDIT: The reason I'm asking is that I'm updating content with the attributes value, so data-test="" should update the content to an empty value, but data-test should do nothing at all

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• Using argument (this) passed via element eventhandler

  - by Kel

  Hey guys, I want to use the argument I pass (this) in a JS function and treat it as an jQuery variable. Example: <script> function useMe(obj){ $(obj).val(); ... ... ... } </script> <select id="selectid" onChange="useMe(this)"> <option>......</option> </select> Is there a possibility to treat the passed argument as a jQuery element? Btw. I need to do it this way, because the select-element isn't created on load. The select element will be created later asynchronously. So, this won't work: $("select").each(function (i){ var select_id = $(this).attr("id"); $(this).change(function(e){ because it doesn't exist yet. Thanks for your help.

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• Hype Machine Fluid Greasemonkey script broken help fixing it.

  - by newhen

  Hi, There is a greasemonkey script here that is suppose to work with a standalone fluid app. I just tried it out and it doesn't but I can't figure out what is wrong with it. Anybody wanna take a look at the code for me see if I am doing something wrong. Alot to ask but worth trying. Source: http://userscripts.org/scripts/review/62762 Screenshot fluid while the script is enabled: http://grab.by/4CoZ (there is no difference in the site at all)

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• Some jQuery-powered features not working in Chrome

  - by Enchantner

  I'm using a jCarouselLite plugin for creating two image galleries on the main page of my Django-powered site. The code of elements with navigation arrows is generating dynamically like this: $(document).ready(function () { $('[jq\\:corner]').each(function(index, item) { item = $(item); item.corner(item.attr('jq:corner')) }) $('[jq\\:menu]').each(function (index, item) { item = $(item); item.menu(item.attr('jq:menu')) }) $('[jq\\:carousel]').each(function(index, item) { item = $(item); var args = item.attr('jq:carousel').split(/\s+/) lister = item.parent().attr('class') + '_lister' item.parent().append('<div id="'+ lister +'"></div>'); $('#' + lister).append("<a class='nav left' href='#'></a><a class='nav right' href='#'></a>"); toparrow = $(item).position().top + $(item).height() - 50; widtharrow = $(item).width(); $('#' + lister).css({ 'display': 'inline-block', 'z-index': 10, 'position': 'absolute', 'margin-left': '-22px', 'top': toparrow, 'width': widtharrow }) $('#' + lister + ' .nav.right').css({ 'margin-left': $('#' + lister).width() + 22 }) item.jCarouselLite({ btnNext: '#' + lister + ' .nav.right', btnPrev: '#' + lister + ' .nav.left', visible: parseInt(args[0]) }) }) The problem is that if page is loaded through an url, typed in the adress bar, some functions doesn't work and the second gallery appears with the wrong parameters, but if I came to this page via clicking link - everything works perfectly. It happends only in Google Chrome (Ubuntu, stable 5.0.360.0), but not in Firefox or Opera. What could be the reason?

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• Google Maps, marker info window won't show up ?

  - by user296516

  Hi guys, I have written this code that loops through an array of lat/long coordinates and places a marker at each of the coordinate. Everything forks fine, exempt the info window won't appear once the marker is clicked. var ExpTowerIcon = new GIcon(); ExpTowerIcon.image = "tower.png"; ExpTowerIcon.iconSize = new GSize(75, 75); ExpTowerIcon.iconAnchor = new GPoint(37, 65); ExpTowerIcon.infoWindowAnchor = new GPoint(37, 20); var marker=new Array(); for ( i=0 ; i < lat.length ; i++ ) { var MarkerPoint = new GLatLng(lat[i],long[i]); marker[i] = new GMarker(MarkerPoint,{icon:ExpTowerIcon}) map.addOverlay( marker[i] ); GEvent.addListener( marker[i] , 'click', function() { marker[i].openInfoWindowHtml('Hello!') ; }); var polyline = new GPolyline([ new GLatLng(lat[i],long[i]) , new GLatLng(lat[i+1],long[i+1]) ], "#ff0000", 5); map.addOverlay(polyline); } Any ideas? Thanks!

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• Auto populate a text field based on another text field

  - by Syed Aslam

  I am trying to auto-populate a text field based on the value of another input field. Currently trying to do this using observe_field helper like this: <%= observe_field( :account_name, :function => "alert('Name changed!')", :on => 'keyup' ) %> <% form_for(@account, :html => { :id => 'theform' }) do |f| %> <label for="accountname"> Account name </label> <%= form.text_field :name, :tabindex => '1' %> <label for="subdomain"> Subdomain </label> <%= form.text_field :subdomain, :tabindex => '2' %> <% end %> When the user enters text in the account_name text_field, I want to copy that convert into a subdomain (downcase and join by '-') and populate to subdomain text_field. But, in the process getting this error: element is null var method = element.tagName.toLowerCase(); protot...9227640 (line 3588) Where exactly am I going wrong here? Or is there a better way to do this?

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• How can you tell if an HTML dropdown is displaying the list of options

  - by Ross Goddard

  Is there a way to determine if a given drop down is currently active and displaying it's list of options? I am currently binding to the mousedown event of the dropdown and populating the options when the user clicks on it. Unfortunately the mousedown event fires when the user selects the option as well. If I can determine if the drop down is already displaying it's options, then I can skip populating the options.

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• Import/Export HTML5 localStorage data

  - by hamen

  Hi all, I'm working on a simple TODO list app based on localStorage HTML5 feature: http://hamen.github.com/webnotes/ I'm wondering if it's possible to import/export data in some way. How could I provide an "Export note/Import note" feature to make users being able to save their note on their HD and import them in another browser profile? Thanks

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• Replacing links detected in a HTML with other links using JS

  - by Jim

  Hi people. I'm having a bit of trouble figuring out how to do this one. Here's the scenario. My e-commerce site has a blog with a lot of content, promoting the products I sell, reviewing them etc. 99% of the posts on the blog link back to the products they are talking about. I'm going to be changing the URL where my ecommerce system is located. Therefore my blog is going to end up sending people to a lot of 404 pages. The idea I've had is to be able inclue a JS file which will on load, scan the document for existing links then, if found, swap them out with ones which are now correct. I hope this make sense. Cheers, Jim

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• Is it possible to remember the filename from a fileupload field and then later launch that file via

  - by Pieter Breed

  I have a HTML file upload field from which I'm reading the file name of the file that the user specifies. The actual contents of the file is never uploaded. At a later stage, is it possible to construct a link using this file name information so that if the user clicks on this link, the original file is launched into a new browser window? If not, what are the reason for disallowing this behaviour? The purpose of such a feature is to store links to documents that are available on a mapped local drive or a network share.

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• Jquery Using Jeditable and activating on click

  - by BandonRandon

  I found this to be almost exactly what I'm trying to do. I'm using Jeditable I can get the default setup to work. I've also been able to get the code in the forum above to work. I believe my problem is that because I'm using a table I need to so something else to select the previous element. Here is my HTML <table> <tr> <td width="5%"><input class="cat_checkbox" type="checkbox" name='delete_cat[]' value='<?php echo("$cat_data[cat_id]");?>' /></td> <td width="90%" class="edit_cat_title" id='unique_id'>Category</td> <td width="5%"><a href="#" class="edit_cat_title_trigger"><img src="images/edit.gif" border="0"></a></td> </tr> </table> and here is my JQuery: //modify title content on the fly $('.edit_cat_title').editable('action.php', { name : 'cat_title', indicator : 'Saving...', submit : 'OK', cancel : 'Cancel', tooltip:'click to edit', event : 'edit' }); //trigger with the click of the edit image $(".edit_cat_title_trigger").bind("click", function() { $(this).prev().trigger("edit_cat_title"); }); I know I probably should be able to figure it out and I know all i have to do is change $(this).prev().trigger("edit_cat_title"); to the right thing but I'm still really new to Jquery. Thanks

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• transition of x-axis results in overflow

  - by peter

  First of all, no: this question is not about the (yet) ugly transition of the lines (I might open another one for that, though..). I'm displaying data in line charts and the user can select the time horizon. The x-axis then correspondingly transitions so as to fit to the changed time horizon. In attached image, e.g., the time horizon was 1 week and then I switched to 4 weeks. The number of ticks on the x-axis increases from 7 to 28, correspondingly. Question: How can I prevent the x-axis animation to display outside the svg container? As you can see, the additional dates fly in from the left and they are being animated far far outside the container. Any ideas? Right now, the transition works probably in the most simple way it could: // format for x-axis var xAxis = d3.svg.axis() .scale(x) .orient("bottom") .tickFormat(d3.time.format("%d.%m")) .ticks(d3.time.days, 1) .tickSubdivide(0); // Update x-axis svg.select(".x") .transition() .duration(500) .call(xAxis);

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• Problem with twitter API: cannot update status

  - by PainBringer

  I am trying to create Google Chrome extension that will send interesting links to twitter. But, I am unable to connect to the Twitter. The server gets my request, but the response is always the same: "You do not have permission to access /1/statuses/update.json on this server (403 Forbidden)." I am using Wireshark to inspect Http responses. Here is the code of the function i am using: function setStatus(msg) { var status = "status="+msg; var client = new XMLHttpRequest(); client.open("POST","http://api.twitter.com/1/statuses/update.json"); client.setRequestHeader("Authorization", "Basic <user credentials>"); client.setRequestHeader("Content-Type", "application/x-www-form-urlencoded"); client.onreadystatechange = function(){ if(client.readyState ==4){ //whatever } } client.send(status); Am I doing something wrong? I am using Basic Auth. I use this tool to do the encoding, and just put the result instead of . Also, can someone give me an example of OAuth?

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• Link to open in a new window, with 2 frames

  - by Kartik Rao

  I will be displaying news feeds from external websites on my website. So i need to open external links in those feeds in a new window, but give the user an option to return to my website. Basically I'm trying to replicate Google Images' technique of opening a link in a window with 2 frames - with the top frame having an option to "Remove Frame" and the bottom frame displaying the content of the link. Also, since the news feed will be dynamic, I don't want to hard-code anything. The code should be used automatically by any link appearing in the news feeds. Any ideas on how to do it?

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