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  • Help with animating an element in jQuery

    - by alex
    I have an unordered list with a few list elements. #tags { width: 300px; height: 300px; position: relative; border: 1px solid red; list-style: none none; } #tags li { position: absolute; background: gray; } I have also started writing a jQuery plugin to animate the list elements. So far, I place the list elements randomly in the parent container, and choose a random font size for the text. My next step (which I am a bit stuck on) is to animate the list elements... essentially, I want the list elements to do something like this Slide from left to right whilst getting slightly larger up to the middle and then dropping in size back to normal when it hits the right border. Then, it should do the same in reverse, however it should also set a negative 'z-index' and maybe fade in opacity a bit. The first bit I'm really stuck on, is how to determine if the element is near the middle, in a way that I can have a value that starts at 0.1 on the far left hand size and is 1 in the middle and then back to 0.1 on the far right hand size. Basically, I want them to appear as if they are going around in a faux 3D circle into the page. Then I could do something like this $(this).css({ fontSize: percentageTowardsMiddle * 14, }); Do you know how I could do this? Thanks

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  • img onload doesn't work well in IE7

    - by rmeador
    I have an img tag in my webapp that uses the onload handler to resize the image: <img onLoad="SizeImage(this);" src="foo" > This works fine in Firefox 3, but fails in IE7 because the image object being passed to the SizeImage() function has a width and height of 0 for some reason -- maybe IE calls the function before it finishes loading?. In researching this, I have discovered that other people have had this same problem with IE. I have also discovered that this isn't valid HTML 4. This is our doctype, so I don't know if it's valid or not: <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> Is there a reasonable solution for resizing an image as it is loaded, preferably one that is standards-compliant? The image is being used for the user to upload a photo of themselves, which can be nearly any size, and we want to display it at a maximum of 150x150. If your solution is to resize the image server-side on upload, I know that is the correct solution, but I am forbidden from implementing it :( It must be done client side, and it must be done on display. Thanks. Edit: Due to the structure of our app, it is impractical (bordering on impossible) to run this script in the document's onload. I can only reasonably edit the image tag and the code near it (for instance I could add a <script> right below it). Also, we already have Prototype and EXT JS libraries... management would prefer to not have to add another (some answers have suggested jQuery). If this can be solved using those frameworks, that would be great. Edit 2: Unfortunately, we must support Firefox 3, IE 6 and IE 7. It is desirable to support all Webkit-based browsers as well, but as our site doesn't currently support them, we can tolerate solutions that only work in the Big 3.

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  • FB Developer: Capture POST variables after multi-friend-selector

    - by Faruz
    Using this: http://stackoverflow.com/questions/820421/can-i-use-facebooks-fbfriend-selector-in-an-iframe I created a multi-friend selector in my IFRAME FB application. I want to know if the user selected any users for invite so I can reward him with extra points. In the developer WIKI I saw that [ids] is transferred to requested page via POST. But how I can capture the values if I'm using JS/.NET? (Preferably through .NET so I can easily save values in the DB).

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  • using checkbox as radio button

    - by ash34
    Hi, I am looking for a way for users to select one of the two options (strength or weakness) for a list of qualities. for eg: strength weakness not applicable 1. Communication 2. Punctuality ... Radio button lets me select either a strength or weakness. However, I want the user to check only those qualities that apply and if a user accidentally selects a quality there is no way to undo the selection for a radio button unless there is a third radio button called not applicable or have the user re-enter the page. I was wondering if there is a way to be able to get the flexibility of a checkbox (check / uncheck) in addition to disabling or enabling the other checkbox when one of them is checked or unchecked instead of using three radio buttons. I don't think I have seen this behavior before so wondering if there is a more elegant way of doing this. I am open to other ideas to get the same functionality. Using a checkbox as radio button was just a thought. thanks much.

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  • How to differentiate between scrollbar click events and scrollbar drag events?

    - by Sameer
    I need to scroll an EXT-GWT grid by some custom amount instead of the default 1-2 rows. Since I couldn't find any parameter that let me do this, I overrode the event handler to capture scroll or mousewheel events. On any such event, I just programmatically move the scroller further by the required amount in the same direction, keeping a flag to ensure that it doesn't go into an infinite loop. However, this technique fails when the user scrolls the grid with the scroller. Specifically, when I drag the scroller from some position to the top of the scroll track, the rows displayed in the grid are not the topmost rows in the grid but some rows further down. I figured that if I could differentiate between the events generated by the scroll-up and scroll-down buttons and those generated by scroller drag, I could handle them separately and rectify the issue. Any way this could be done? Or is there a way to specify the amount by which a scrollbar should scroll in one step? Thanks -Sameer

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  • Change Image with transition effects

    - by Goro
    Hello, I have the following script that changes my image on a timer: var da = setInterval( function() { var current_image = document.getElementById('node_picture').src; var image_index = current_image.substring(48,49); image_index++; if (image_index > 4) { image_index = 1; } document.getElementById('node_picture').src="img/node/<?php echo $node_id ?>/" + image_index + ".png"; }, 4000); I am trying to add a jQuery FadeIn() effect. I tried to add $('node_picture').FadeIn(); but that does not work. Thanks,

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  • Extending Object in Javasript

    - by smsteel
    I'm trying to extend Object functionality this way: Object.prototype.get_type = function() { if(this.constructor) { var r = /\W*function\s+([\w\$]+)\(/; var match = r.exec(this.constructor.toString()); return match ? match[1].toLowerCase() : undefined; } else { return typeof this; } } It's great, but there is a problem: var foo = { 'bar' : 'eggs' }; for(var key in foo) { alert(key); } There'll be 3 passages of cycle. Is there any way to avoid this?

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  • Capture reload/endrequest event after server redirect to download file

    - by Prutswonder
    Inside a webpage I have an Excel download button, which redirects to a webpage that serves the requested Excel file via the application/ms-excel MIME type, which usually results in a file download in the browser. In the webpage, I have the following jQuery code: $(document).ready(function () { $(".div-export .button").click(function () { setBusy(true); }); Sys.WebForms.PageRequestManager.getInstance().add_endRequest(function () { setBusy(false); }); }); Which displays a busy animation while the user waits for the Excel file to be served. Problem is: The animation doesn't end (setBusy(false);) after the file download, because the endRequest event doesn't get fired, probably because of the server redirect. Does anyone have a workaround for this? Edit: The download button is handled in an UpdatePanel.

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  • Saving generated .wav file to server with PHP

    - by bionicOnion
    I am developing a website where users can compose their own music, and the site will generate a .wav file for their creation. This is working correctly (inasmuch as I can play it on the page). However, I would like to save this file to the server to be listened to/downloaded at a later time, and the saved version of the file can no longer be opened and played by the HTML audio tag. What, if anything, must I put into the file besides the file besides the raw data? Instead of setting the src attribute of the audio tag to the location of the file, will I actually need to open it and generate a URI?

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  • jQuery / jqgrid / Editing form events

    - by MiBol
    I'm working with the jqGrid and I want to know if exists an event to read a double click in the Editing Form? Has example: I have a grid with ColumnA and ColumnB. I want read the event when the user perform a double click under ColumnB (In the Editing Form). Thanks! I found the solution of my problem ^^ Here is the code, to this example I use the alert "TEST!!!"... [Thanks to Oleg to wake up my mind :P] In the colModel { name: 'Total_uploads', index: 'Total_uploads', width: '100', editable: true, edittype: 'text', editoptions: { size: 10, maxlength: '20', dataInit: function (el) { $(el).click(function () { alert("TEST!!!"); }); } }, editrules: { required: true }, formoptions: { label: 'Total uploads: ', elmsuffix: '&nbsp;&nbsp; <span style="color : #0C66BE; font-family: Calibri">(*)</span>' } }

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  • How to inherit from a non-prototype object

    - by Andres Jaan Tack
    The node-binary binary parser builds its object with the following pattern: exports.parse = function parse (buffer) { var self = {...} self.tap = function (cb) {...}; self.into = function (key, cb) {...}; ... return self; }; How do I inherit my own, enlightened parser from this? Is this pattern designed intentionally to make inheritance awkward? My only successful attempt thus far at inheriting all the methods of binary.parse(<something>) is to use _.extend as: var clever_parser = function(buffer) { if (this instanceof clever_parser) { this.parser = binary.parse(buffer); // I guess this is super.constructor(...) _.extend(this.parser, this); // Really? return this.parser; } else { return new clever_parser(buffer); } } This has failed my smell test, and that of others. Is there anything about this that makes in tangerous?

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  • 2 IE8 behave differently

    - by portoalet
    Hi, I am having a problem where 2 IE8 (with the same version number 8.0.6001.18702) behave differently in processing a webpage. The misbehaving one is of course used by the client :) , and I just cannot reproduce it on my machine or on our test machine. How can I narrow down what is causing this problem? Thanks

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  • return a line of grid view in ModalPopupExtender

    - by Meysam Javadi
    hi i use ModalPopupExtender from AjaxControlToolkit to show a panel. my panel have something like this: <asp:Panel ID="pnlSearchPlan" runat="server" style="background-color:#ffffdd;border-width:3px;border-style:solid;border-color:Gray;padding:3px;width:400px;"> <asp:ScriptManager ID="ScriptManager1" runat="server"> </asp:ScriptManager> <cc1:ModalPopupExtender ID="UpdatePanel1_ModalPopupExtender" runat="server" TargetControlID="linkToPopup" PopupControlID="pnlSearchPlan" BackgroundCssClass="ModalBackColor" DropShadow="true" OkControlID="tbnSelect" OnOkScript="onOk()" CancelControlID="btnCancel"> </cc1:ModalPopupExtender> <asp:UpdatePanel ID="UpdatePanel1" runat="server"> <ContentTemplate> <table width="100%" dir="rtl"> <tr> <td >owner</td> <td> <asp:TextBox ID="txtCriteria" runat="server" ></asp:TextBox> <asp:Button ID="btnOk" runat="server" Text="ok" onclick="btnOk_Click" /> <asp:Button ID="tbnSelect" runat="server" Text="select" onclick="tbnSelect_Click" /> <asp:Button ID="btnCancel" runat="server" Text="close" /> </td> </tr> <tr> <td colspan="2"> </asp:RadioButtonList> </td> </tr> <tr> <td colspan="2" align="center"> <pcal:CustomGridView ID="gdvPlan" runat="server" CellPadding="4" ForeColor="Black" GridLines="Vertical" BackColor="White" BorderColor="#DEDFDE" BorderStyle="None" BorderWidth="1px"> <RowStyle BackColor="#F7F7DE" /> <FooterStyle BackColor="#CCCC99" /> <PagerStyle BackColor="#F7F7DE" ForeColor="Black" HorizontalAlign="Right" /> <SelectedRowStyle BackColor="#CE5D5A" Font-Bold="True" ForeColor="White" /> <HeaderStyle BackColor="#6B696B" Font-Bold="True" ForeColor="White" /> <AlternatingRowStyle BackColor="White" /> </pcal:CustomGridView> </td> </tr> </table> </ContentTemplate> </asp:UpdatePanel> </asp:Panel> now want return one cell of gridview after ModalPopupExtender is closed, is this possible without postback? is there any way to return value after close?

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  • Replacing text inside textarea without focus

    - by asker
    I want to replace selected text(or insert new text after cursor position if nothing is selected). The new text is entered from another textbox. I want to be able to insert new text without clicking first (focusing) in the textarea. meaning: first select text to replace inside textarea, then enter new text into the textbox and click the button. <textarea id='text' cols="40" rows="20"> </textarea> <div id="opt"> <input id="input" type="text" size="35"> <input type="button" onclick='pasteIntoInput(document.getElementById("input").value)' value="button"/> </div> function pasteIntoInput(text) { el=document.getElementById("text"); el.focus(); if (typeof el.selectionStart == "number"&& typeof el.selectionEnd == "number") { var val = el.value; var selStart = el.selectionStart; el.value = val.slice(0, selStart) + text + val.slice(el.selectionEnd); el.selectionEnd = el.selectionStart = selStart + text.length; } else if (typeof document.selection != "undefined") { var textRange = document.selection.createRange(); textRange.text = text; textRange.collapse(false); textRange.select(); } } Online example: link text

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  • jQuery - Callback failing if there is no options parameter

    - by user249950
    Hi, I'm attempting to build a simple plugin like this (function($) { $.fn.gpSlideOut = function(options, callback) { // default options - these are used when no others are specified $.fn.gpSlideOut.defaults = { fadeToColour: "#ffffb3", fadeToColourSpeed: 500, slideUpSpeed: 400 }; // build main options before element iteration var o = $.extend({}, $.fn.gpSlideOut.defaults, options); this.each(function() { $(this) .animate({backgroundColor: o.fadeToColour},o.fadeToColourSpeed) .slideUp(o.SlideUpSpeed, function(){ if (typeof callback == 'function') { // make sure the callback is a function callback.call(this); // brings the scope to the callback } }); }); return this; }; // invoke the function we just created passing it the jQuery object })(jQuery); The confusion I'm having is that normally on jQuery plugins you can call something like this: $(this_moveable_item).gpSlideOut(function() { // Do stuff }); Without the options parameter, but it misses the callback if I do it like that so I have to always have var options = {} $(this_moveable_item).gpSlideOut(options, function() { // Do stuff }); Even if I only want to use the defaults. Is there anyway to make sure the callback function is called whether or not the options parameter is there? Cheers.

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  • Dynamically Resizing an Iframe

    - by regex
    Hello All, I can see that this question has been asked several times, but none of the proposed solutions seem to work for the site I am building, so I am reopening the thread. I am attempting to size an iframe based on the height of it's content. Both the page that contains the iframe and it's source page exist on the same domain. I have tried the proposed solutions in each of the following threads: Resize iframe height according to content height in it Resizing an iframe based on content I believe that the solutions above are not working because of when the reference to body.clientHeight is made, the browser has not actually determined the height of the document. Here is the code I am using: var ifmBlue = document.getElementById("ifmBlue"); ifmBlue.onload = resizeIframe; function resizeIframe() { var ifmBlue = document.getElementById("ifmBluePill"); var ifmDiv = ifmBlue.contentDocument.getElementById("main"); var height = ifmDiv.clientHeight; ifmBlue.style.height = (ifmBlue.contentDocument.body.scrollHeight || ifmBlue.contentDocument.body.offsetHeight || ifmBlue.contentDocument.body.parentNode.clientHeight || height || 500) + 5 + 'px'; } If I debug the script using fire debug, the client height of the iframe.contentDocument's main div is 0. Additionally, body.offsetHieght, & body.scrollHeight are 0. However, after the script is finished running, if I inspect the DOM of the HTML iframe element (using fire debug) I can see that the body's clientHeight is 456 and the inner div's clientHeight is 742. This leads me to believe that these values are not yet set when iframe.onload is fired. So, per one of the threads above, I moved the code into the body.onload event handler of the iframe's source page. This solution also did not work. Any help you can provide is much appreciated. Thanks, CJ

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  • Why does my Ajax function returns my entire code?

    - by JDelage
    I'm playing with sample code from the book "Head first Ajax". Here are the salient pieces of code: Index.php - html piece: <body> <div id="wrapper"> <div id="thumbnailPane"> <img src="images/itemGuitar.jpg" width="301" height="105" alt="guitar" title="itemGuitar" id="itemGuitar" onclick="getDetails(this)"/> <img src="images/itemShades.jpg" alt="sunglasses" width="301" height="88" title="itemShades" id="itemShades" onclick="getDetails(this)" /> <img src="images/itemCowbell.jpg" alt="cowbell" width="301" height="126" title="itemCowbell" id="itemCowbell" onclick="getDetails(this)" /> <img src="images/itemHat.jpg" alt="hat" width="300" height="152" title="itemHat" id="itemHat" onclick="getDetails(this)" /> </div> <div id="detailsPane"> <img src="images/blank-detail.jpg" width="346" height="153" id="itemDetail" /> <div id="description"></div> </div> </div> </body> Index.php - script: function getDetails(img){ var title = img.title; request = createRequest(); if (request == null) { alert("Unable to create request"); return; } var url= "getDetails.php?ImageID=" + escape(title); request.open("GET", url, true); request.onreadystatechange = displayDetails; request.send(null); } function displayDetails() { if (request.readyState == 4) { if (request.status == 200) { detailDiv = document.getElementById("description"); detailDiv.innerHTML = request.responseText; }else{ return; } }else{ return; } request.send(null); } And Index.php: <?php $details = array ( 'itemGuitar' => "<p>Pete Townshend once played this guitar while his own axe was in the shop having bits of drumkit removed from it.</p>", 'itemShades' => "<p>Yoko Ono's sunglasses. While perhaps not valued much by Beatles fans, this pair is rumored to have been licked by John Lennon.</p>", 'itemCowbell' => "<p>Remember the famous \"more cowbell\" skit from Saturday Night Live? Well, this is the actual cowbell.</p>", 'itemHat' => "<p>Michael Jackson's hat, as worn in the \"Billie Jean\" video. Not really rock memorabilia, but it smells better than Slash's tophat.</p>" ); if (isset($_REQUEST['ImageID'])){echo $details[$_REQUEST['ImageID']];} ?> All this code does is that when someone clicks on a thumbnail, a corresponding text description appears on the page. Here is my question. I have tried to bring the getDetails.php code inside Index.php, and modify the getDetails function so that the var url be "Index.php?ImageID="... . When I do that, I get the following problem: the function does not display the snippet of text in the array, as it should. Instead it reproduces the entire code - the webpage, etc - and then at the bottom the expected snippet of text. Why is that?

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  • Raphael Scope Drag n drop multiple paper instances

    - by donald
    I have two Raphael paper instances. In both I want to drag and drop an element (circle). It is important for me to assign both these circles the same id. I expected no problem, as both are in different paper instances and therefore in different scope. What happens is, that somehow both elements react, when I have clicked both elements at least once. If I however give these elements different IDs everything works fine (each element only calls its "start", "drag" and "up" function if draged around). Is this intended behaviour of Raphael and do I have to assign different IDs to the elements in the different paper instances? Hopefully not and you can point me to the right direction :-) Thanks a lot for your Help in advance, Here comes the code: <!doctype html> <html> <head> <meta charset="utf-8" /> <title>DragNDrop</title> <script src="raphael-min.js"></script> </head> <body> <h1>Paper1</h1> <div id="divPaper1" style ="height: 150px; width: 300px; border:thin solid red"></div> <h1>Paper2</h1> <div id="divPaper2" style ="height: 150px; width: 300px; border:thin solid red"></div> <script> start1 = function () { console.log("start1"); } drag1 = function () { console.log("move1"); } up1 = function () { console.log("up1"); } start2 = function () { console.log("start2"); } drag2 = function () { console.log("move2"); } up2 = function () { console.log("up2"); } var paper1 = Raphael("divPaper1", "100%", "100%"); var circle1 = paper1.circle(40, 40, 30); circle1.attr("fill", "yellow"); circle1.id = "circle"; //both circles get the same id circle1.drag(drag1, start1, up1); paper2 = Raphael("divPaper2", "100%", "100%"); var circle2 = paper2.circle(40, 40, 30); circle2.attr("fill", "red"); circle2.id = "circle"; //both circles get the same id circle2.drag(drag2, start2, up2); </script> </body>

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  • jquery plugin with multiple functions

    - by tcurdt
    According to the developer documentation jquery plugins are supposed to have only one namespace for all functions they make available. Which is straight forward as long as you only expose a single function per context (static/element). (function($){ var state_a = 0, $.myplugin = function(in_options) { // static return this; } $.fn.myplugin = function(in_options) { // element return this; } })(jQuery); This makes calls like this possible: $("elem").myplugin(options); jQuery.myplugin(options); What's the best approach if you have more than one function and need to share state? I would like to call into my plugin like this: $("elem").myplugin.start(options); $("elem").myplugin.stop(); jQuery.myplugin.start(options); jQuery.myplugin.stop();

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  • MooTools Classes and JsDoc

    - by Joel Alejandro
    I have the following Moo class: Nem.Ui.Window = new Class({ Implements: [Options, Events], options: { caption: "Ventana", icon: $empty, centered: true, id: $empty, width: $empty, height: $empty, modal: false, desktop: $empty, x: $empty, y: $empty, layout: $empty }, initialize: function(options) { this.setOptions(options); /* ... */ }, setHtmlContents: function(content) { /* ... */ }, setText: function(text) { /* ... */ }, close: function(win) { /* ... */ }, /* ... */ }); I want to document it with JsDoc. I read you can use @lends [class].prototype inside new Class and mark initialize with the @constructs tag. How can I mark methods and events such? I.E.: setHtmlContents should be a method, close should be an event. Also, can the elements under options be documented, somehow?

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  • How to create a closure and pass in variable length argument list?

    - by Jian Lin
    We can create a closure p by capturing the arguments in the scope in the following code: var p = function() { }; if (typeof(console) != 'undefined' && console.log) { p = function() { console.log(arguments); }; } but the arguments are passed like an array to console.log, instead of passed one by one as in console.log(arguments[0], arguments[1], arguments[2], ... Is there a way to expand the arguments and pass to console.log like the way above? Note that p = console.log; works well in Firefox and IE 8 but not on Chrome.

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  • Js/Jquery bind Datatable or Datalist

    - by Robin Rieger
    Scenario I have a input box for post codes. When you put in a postcode it makes a call to a web service and gets all the suburb names back and binds them to a list, like an input dropdown list. This works when I return a List<string> from the web service for just the names. No problem. The problem arises when I go to save the values to the db. When it gets saved I cannot save the name of the suburb in the suburb column in the db. I have to save the id of that suburb for the foreign key constraint. So then I changed the List<> thing slighty and cheated and returned the following. <ArrayOfString> <string>8213</string> <string>BROOKFIELD</string> <string>8214</string> <string>CHAPEL HILL</string> <string>8215</string> <string>FIG TREE POCKET</string> etc.... The reason for this is so I can have the value of the item in the drop down as the id and hence can save that in the code behind on save. To do this, I did the following: $(result).each(function (index, value) { var suburbname; var pattern = new RegExp('[0-9*]'); var m = pattern.exec(value); if (m == null) { suburbname = value var o = new Option(suburbname, suburbid); /// jquerify the DOM object 'o' so we can use the html method $(o).html(suburbname); $(document.getElementById('<%= suburb.ClientID %>')).append($("<option></option>") .attr("value", suburbid) .text(suburbname)); } else { suburbid = value } That works as well... the drop down only has name and the value for those is the number The problem....? I am making assumptions above which I don't like... I.e. that the name never has a number it, that the web service will always return the id first to set the id before running the add to the dropdown for the first time. It just feels wrong.... :S (thoughts?) So, if I change the web service to return a datatable, to out the following (which is what the whole query returns): <Suburbs diffgr:id="Suburbs1" msdata:rowOrder="0"> <SuburbID>8213</SuburbID> <SuburbName>BROOKFIELD</SuburbName> <StateID>4</StateID> <StateCode>07</StateCode> <CountryCode>61</CountryCode> <TimeZones>10.00</TimeZones> <Postcode>4069</Postcode> </Suburbs> Is there a way of acheiving the same as above in js/jquery. So when the user inputs the postcode the webservice returns the datatable and then binds it to the select with the SuburbID going into the value and the name going into the text??? Any other ways I could return the data from the web service to solve this? Note: essentially I need the option to look like this: <option value="8213">BROOKFIELD</option> I also thought I could make a second call to get just the id on the bind of the text... but I kind of want to only make one call.... Thanks in adance, Cheers Robin .net, C#, js, jquery, web service..... Solution with guidance from Billy The adding to the select using the other method below did not work, but my original way did once I had the correct variables so just used that.... The service returns: <ArrayOfMyClass> <MyClass> <ID>8213</ID> <Name>BROOKFIELD</Name> </MyClass> ... etc The js is: (note: it is onchange of the postcode input box. it runs a web service and then on success runs the following) function OnCompleted(result) { var _suburbs = result; var i = 0; $(_suburbs).each(function () { var SuburbName = _suburbs[i].Name; var SuburbID = _suburbs[i].ID; $(document.getElementById('<%= suburb.ClientID %>')).append($("<option></option>") .attr("value", SuburbID) .text(SuburbName)); i = i + 1; });

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