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• ctrl-c does not copy text on a webpage

  - by aepheus

  I've come across this several times, ctrl-c randomly does not copy. I think it's caused by javascript or maybe some odd html syntax. I never spent the time to track down what caused it. Anyone know the typical/common causes of ctrl-c not working (to copy) on a website? Speaking from a developers standpoint. What do we developers end up doing to break ctrl-c? Just to clarify, I'm not interested in preventing copying. I'm trying to do the opposite, occasionally I find I've done something that is preventing ctrl-c from copying text, and that is not very user friendly on a text heavy site.

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• Two buttons in a form, Both called

  - by coffeeaddict

  Here's my ASP.NET form. When I click one button it calls both jQuery functions. It's probably a rudimentary HTML question but I'm not sure why: <form id="form1" runat="server"> <div id="testDialog"> </div> <p><input type="button" id="invoke1" value="test 1" /></p> <input type="button" id="invoke2" value="test 2" /> </form> <script type="text/javascript"> $(function() { $("input:invoke1").click(function(){ showSomething("testDialog"); }); $("input:invoke2").click(function(){ showSomething2("test.aspx", options); }); }); </script>

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• How do I make a expanding textbox?

  - by jpjp

  I want to make a textbook where it starts out as a given width/height. Then if users type more then the given amount of space, the textbox expands downward. How do I go about doing this? Do I use css? The basic textbox just displays a scroll bar when users pass the number of rows allow. How do I make it so the textbox expands the rows by say 5 more? <form method="post" action=""> <textarea name="comments" cols="50" rows="5"></textarea><br> <input type="submit" value="Submit" /> </form> How do i use the example that Robert Harvey mentioned? I never used javascript before..

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• Can a function defined in a bookmarklet be called from a page-level script?

  - by Soviut

  I have a bookmarklet that needs to open a new window/tab. In order to avoid the popup blocker, I need to call the window.open() method directly in the bookmarklet ie: at the browser-level. However, I want to keep the bookmarklet updatable by loading external Javascript files. To do this, the bookmarklet needs to append script nodes to the DOM. If i were to put window.open() code in one of these externally loaded scripts, the popup blocker would block it since its page-level. What I want to know is if I can create a wrapper function around window.open() in my bookmarklet, then call it from the externally loaded script? What is the scope and what are the permissions on a wrap such as this?

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• Passing page control from jscript to pagemethod in the codebehind?

  - by brandonprry

  Hi, I am looking write a javascript method as such called when a dropdownlist changes value function GetStuff(sender, destID){ var dest = document.getElementById(destID); this.PageMethods.GetStuffs(sender, dest, null, null); } GetStuffs() is in the Codebehind as follows: [WebMethod] public static void GetStuffs(object sender, object dest) { DropDownList s = sender as DropDownList; DropDownList d = dest as DropDownList; d.Items.Add(new ListItem(s.SelectedValue)); } I have a break point set at the method and alerts in the GetStuff() jscript method fire up until the PageMethod call, at which nothing happens. I have set OnSuccess and OnFailure methods up with alerts and they don't get fired. Any thoughts? Am I doing something inherently wrong?

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• document.forms.gallery_form.submit is not a function

  - by Keene Maverick

  I swear, I have this exact thing working on another page. I'm such a javascript noob it's embarrassing... function delete_gallery() { var gallery = document.getElementById('gallery_id').value; var form = document.getElementById('gallery_form'); form.setAttribute('action', 'index.php?action=delete&section=galleries&id='+gallery); document.forms['gallery_form'].submit(); } Inspecting the element shows that it's updating the action correctly : <form method="post" action="index.php?action=delete&amp;section=galleries&amp;id=12" name="gallery_form" id="gallery_form"><input type="hidden" value="12" id="gallery_id" name="gallery_id"><p>Name: <input type="text" name="name" value="Woo"></p><p>Description:<br><textarea name="description">Dee</textarea><input type="hidden" value="2" name="artist"></p><p><input type="submit" value="Submit" name="submit"> </p></form> Here's the button I use to call the function, it's in a table below the form: <button onclick="delete_gallery()" type="button">Delete Gallery</button>

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• What is the easiest method to get the selection in input text field ?

  - by Misha Moroshko

  How could I get the selected text in the following code ? I working with Firefox 3.6.3 (currently not interested in other browsers). HTML: <input id="my_text_field" type="text" /> <div id="log"></div> JavaScript: $("#my_text_field").select(function() { var selected_text = "Something selected"; // What should be here ? $("#log").append(selected_text + "<br />"); });

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• How to access radioButton individual items?

  - by vikitor

  Hello, I've got 2 radio button groups showed differently depending on the value selected on another radio button. The thing is that I would like to set the default value of the group to the first element in the radiobutton group, but when I change from the other radio button it preserves the value previously selected, when I want it to be reset to the default value. I've been searching in the javascript repository but apparently I cannot access like it says with radio[1].checked = true... It says that radio[1] is undefined, but radio is an HTML Input element object. I'm accessing it from a different file, but var radio = document.getElementById("radio") works, but I can't access the individual radiobuttons. Thank you in advance

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• Jquery Help : Draggable to Sortable and then back to draggable again.

  - by Swamy g

  I have a pool of items in the drag list which is connected to a sortable using connectToSortable option. Now I want to remove some items from this sort list and move them back to the drag list. Sort of like an undo. Suppose the user moves some 5 items to sort list and decides he/she wants only 4 items, and decides to just drag the unwanted item from the sortlist TO the drag list. How do I accomplish this WITHOUT adding a "remove" link in the sort list. Thanks a lot. For more information please refer to http://the-stickman.com/web-development/javascript/jquery-dropping-items-from-a-draggable-list-to-a-sortable-list/

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• Ideas on limiting content to single printed page?

  - by James Skidmore

  I have 5-6 text areas that users fill out in a template (a couple of columns, basically a newsletter format). I'm needing to limit their content to one printed page, but I'm having a hard time coming up with practical solutions. The printed format (margin, font size, etc.) will be the same for all users, as it's printed from a central source. I've had a couple of ideas, but all of them seem rather unreliable and difficult to implement: Determine height of content using JavaScript and estimate the number of printed pages from that. The problem with this is that browser font sizes can vary, it's only a rough estimate (pixels to inches), etc. Limit the number of characters. This is problematic because there are various text fields, certain characters (like M) take up more space than others (like I), and line breaks obviously count for much more. What ideas do you all have? I appreciate your help!

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• Adding links to this PHP statement

  - by poindexter

  Here is a PHP statement that basically sets off a javascript image slider. Only problem is I can't figure out how to get each individual image to a link to a different page. Any tips or suggestions? I appreciate it! <?php jsbrotate('height=316&width=924&imgdisp=4&imgfade=2&images=/wp-content/uploads/image_1_linked.png|/wp-content/uploads/image_2.png|/wp-content/uploads/image_3.png|/wp-content/uploads/image_4.png|/wp-content/uploads/image_5.png'); ?>

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• How might you unobtrusively enhance the jQuery Datepicker class?

  - by Teflon Ted

  You can pass special strings into jQuery's Datepicker class setDate() method like "+7" which will be translated into "7 days from today": http://docs.jquery.com/UI/Datepicker#method-setDate But you can't get that "+7" back out. When you call getDate() you get the calculated resulting date. I have a use case where I need to pull out the special string "+7" for propagation. One chunk of code is passing a special string into the Datepicker and passing the Datepicker over to another chunk of code which pulls out the date, but the latter sometimes needs to know the special string rather than the calculated date. So I need to enhance the Datepicker tool to (a) store the special code internally and (b) expose it via a method like getOriginallyPassedInDate() or some such. I'm not a jQuery/Javascript ninja so I could really use some guidance on how I might preferably-unobtrusively add the necessary functionality to the Datepicker class, the way you might monkey-patch an object in Ruby I'm guessing.

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• JS Framework that doesn't use CSS selectors?

  - by RoToRa

  A thing that I noticed about most JavaScript frameworks is that the most common way to find/access the DOM elements is to use CSS selectors. However this usually requires the framework to include a CSS selector parser, because they need to support selectors, that the browser natively doesn't, foremost the frameworks own proprietary extensions. I would think that these parsers are large and slow. Wouldn't it be more efficient to have something that doesn't require a parser, such a chained method calls? Some like: id("example").children().class("test").hasAttribute("href") instead of $("#example > .test[href]") Are there any frameworks around that do something like this? And how do they compare with jQuery and friends in regard to performance and size? EDIT: You can consider this a theoretical discussion topic. I don't plan to use anything other than jQuery in any practical projects in near furure. I was just wondering why there aren't any other, possibly better approaches.

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• How to show a page after a specific time period?

  - by Mahfuz

  I want to build an online quiz test site. Suppose, exam will start at 10:00 am and a student login to give exam at 9:45 am. Whenever the student clicks 'Take Exam' button, he/she cannot not get access to the question paper because the exam time is 10:00 am and there are still 15 minutes before the exam start. Now I want to put some Javascript or PHP code that will prohibit the students to give exam earlier and if a students come early, it will show a stopwatch which display the remaining time before exam time and when the current time is equal to exam time then he/she will be directly redirected to the question paper page.

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• Preloading images in HTML, is there a more modern way?

  - by John

  I have an image loaded by JS on a mouse event. It's a fairly big image so I want to make sure it gets pre-loaded. I reemmber some old techniques from years ago and found this example: <SCRIPT LANGUAGE = JAVASCRIPT> if (document.images) { img1 = new Image(); img2 = new Image(); img1.src = "imageName1.gif"; img2.src = "imageName2.gif" } </SCRIPT> I wondered if this is still good/relevant, or maybe browsers automatically detect unused images and preload them anyway? Note my page has to support IE6, so I might still need older techniques anyway, but I'm still interested if more modern browsers have a better way?

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• Build a Sitemap but webpages don't use links

  - by THX1138.6

  Folks I am trying to build a sitemap (we need one badly) for a huge multi-page web app. Technically its not much more than a collection of php/MySQL web forms that use javascript instead of traditional linkage to access the many pages. >td width="100" align="center" ONMOUSEOVER="this.className='bgover'" ONMOUSEOUT="this.className='bgout'" onclick="location.href='../main.php'">Main Page</td> Above is code sample of how the links are currently managed. I know I can search through the various pages, nearly a 1000, and find these "location.href" variables and that will help me a sitemap for each section. But maybe there is an easier way? WE use Trac and SVN so perhaps I am going about this the wrong way? Any advice would be appreciated.

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• How to calculate textarea cols with 100% width?

  - by sehwoo

  I set the width of a textarea to 100%, but now I need to know how many characters can fit in one row. I'm trying to write a javascript function to auto-grow/shrink a textarea. I'm trying to keep from using jquery since I just need this one function. My logic is to rows = textarea.value.split('\n'), iterate through rows and count += rows[i].length/textarea.cols, then count += rows.length, and finally textarea.rows = count. The only problem is that count is too large because textarea.cols is too small.

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• How to stop a Timer-X timer (jQuery)

  - by Damien K.

  I'm using Timer-X's timerDelayCall function in order to have a repeating rotator on my page, which starts automatically as the page loads: jQuery.timerDelayCall({ interval: 2000, repeat: true, callback: function(timer) { ... (my rotator logic here) } } }); The problem is that I'm trying to make a function that includes stopping that timer: function signUp() { ... (timer stop code here) } The documentation stats that timer.stop() does that, but however I format it, I get errors about it not being declared. I have tried every variation I can think of, such as: timer.stop(); jQuery.timer.stop(); $(document).timer.stop(); jQuery.timerDelayCall({ callback: function(timer) { timer.stop() } }); I'm sure I'm missing something simple - I come from a PHP background yet I'm new to javascript - but can't see what it is exactly. Help is much appreciated!

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• JQuery+Java setting field value with val() + single quote

  - by Fabio K

  I have a problem setting the value of a textarea element with jquery's val(). Basically, I have a JSP file which receives a string parameter called 'text'. Java code: String text = (String) request.getParameter('text'); Now I want my textarea element to receive this text: Javascript code: $('#textarea_id').val('<%=text%>'); It works when my text doesnt contain quotes single quotes (and possibly other chars). For example, for text = test' this error happens: Uncaught SyntaxError: Unexpected token ILLEGAL $('#textarea_id').val('test''); I hope you guys understand. I need a way to encode this value... i tried using escape so the quote is replaced by %27, but after unescaping its replaced again and the error happens. Thanks!

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• ASP.NET: How to "reset" validation after calling Page_ClientValidate

  - by Josh Young

  I have an ASP.NET page with a jQuery dialog that is displayed to change some data. I am setting up the jQuery dialog so that when the user clicks the OK button it calls ASP.NET's Page_ClientValidate('validationGroup') via javascript, finds all the invalid controls and changes their CSS class. So here's the scenario: the user opens the dialog, keys in some invalid data, clicks OK (receiving the validation messages), and then clicks Cancel. Now the dialog is closed, but the validation messages are still there, so that when they open the dialog again, the data goes back to the way it was initially, but the form is still in the invalid state (the validation messages are still displaying). What I need is a "reset" function of sorts to call after calling Page_ClientValidate('validationGroup'). Does this exist?

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• How to set cell's background in HTML table ?

  - by misha-moroshko

  I would like to set the background of a cell in HTML table to be like this. What are my options besides using an image as background ? Are there any predefined backgrounds like this ? Maybe dotted, or diagonal lines backgrounds ? In case of image background, if I don't know in advance what would be the size of the cell, what image size should I take ? How to make it be repetitive so it would look nice ? Any HTML/CSS/Javascript/jQuery suggestions are welcome :)

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• asp.net textbox with java script problem

  - by Eyla

  I'm trying to check if asp.net textbox is empty or not using java script. my code working ok but if I enter only numbers will conder it empty so I have either enter letters and numbers or only letters. Please advice. here is my code <script type="text/javascript"> function check(){ var txt = document.getElementById('<%=txt.ClientID%>').value; //(isNaN(cmbStateHome) == false if (isNaN(txt) == false) { alert("Please enter some thing."); } else {alert("ok");} } } </script> <asp:TextBox ID="txt" runat="server"></asp:TextBox> <asp:TextBox ID="txtZipCodeHome" runat="server" Style="top: 361px; left: 88px; position: absolute; <asp:LinkButton ID="LinkButton1" runat="server" OnClientClick="check()">LinkButton</asp:LinkButton>

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• Refreshing <div> and load data from php

  - by forgatn

  I have on my page and there is a tag where is some and values filled from mySQL DB. I need some JavaScript I think. When I select one option, I want to display in this propriate DATAs which are in DB. without refreshing whole page. Can you tell me how to do it, if you know that please?:) <div id="country1" class="tabcontent"> <label>Choose protocol</label> <SELECT name="cisloprot"> <?php $con = mysql_connect("localhost", "root", "123456"); $sql = "SELECT kod FROM prot GROUP BY kod"; $rs = mysql_query($sql,$con); while ($r = mysql_fetch_array($rs)) { echo "<OPTION VALUE=".$r['kod'].">".$r['kod']."</OPTION>"; } ?> </SELECT> </div>

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• .click() callback references local variable from the calling method instead of copying by value

  - by Eric Freese

  The following jQuery Javascript code is included on an otherwise empty page. $(function() { for (var i = 0; i < 10; i++) { element = $('<div>' + i + '</div>'); element.click(function() { alert(i); }); $('body').append(element); } }); The desired behavior is that this code should generate 10 div elements numbered from 0 to 9. When you click on a div element, an alert popup will show the number of the div element you clicked on (i.e. if a user clicks on the div element labeled '4', the alert popup should show the number 4). The alert popup instead shows the number 10 regardless of which div element is clicked on. How can I modify this code to make it behave in the desired way?

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• Solution for using `this` keyword in ajax calls within methods?

  - by dqhendricks

  I am creating a JavaScript class. Some of the methods contain AJAX calls using JQuery. The problem I am comming accross is that I cannot use the this keyword within the AJAX callbacks due to a change in scope. I have come up with a hackey solution, but I am wondering what is the best practice way around this? Here is an example: var someClass = function() { var someElement = $('form'); this.close = function() { someElement.remove(); }; this.query = function() { $.ajax({ url: someurl, success: function() { this.close(); // does not work because `this` is no longer the parent class } }); }; };

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