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  • Jquery check if element exists then add class to different element

    - by Buddy
    I don't know much about jquery at all, so bear with my ignorance, but I'm pretty sure I can accomplish this with jquery. I need jquery to check if an element exists, and if so, add a class to a different element. For example, if class "minimal-price-link" exists, then add a class to "regular-price" or what I really am wanting to do is make the regular-price strikethrough. Here's the code: <div class="price-box"> <span class="regular-price" id="product-price-2"> <span class="price">$240.00</span> </span> <a href="http://stemulation.com/order/sfs30.html" class="minimal-price-link"> <span class="label">Your Price:</span> <span class="price" id="product-minimal-price-2">$110.00</span> </a> </div>

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  • Get computed font size for DOM element in JS

    - by Pekka
    Is it possible to detect the computed font-size of a DOM element, taking into consideration generic settings made elsewhere (In the body tag for example), inherited values, and so on? A framework-independent approach would be nice, as I'm working on a script that should work standalone, but that is not a requirement of course. Background: I'm trying to tweak CKEditor's font selector plugin (source here) so that it always shows the font size of the current cursor position (as opposed to only when within a span that has an explicit font-size set, which is the current behaviour).

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  • Ajax response is taking time to populate.

    - by Rachel
    I am having an util class which is not owned by me. I am calling one of the method of that util class which inturn calls one ajax function. And gives me response back. I need to make a decision depending on the response object. The problem is that response object takes some time to populate(mili seconds). var selector = dojo.byId("SelectorId"); var theChart = new chart( selector, 135, 92, style, frequency, time); if(theChart.data ===null){ console.log("No response"); }else{ Console.log("Use response data"); } and chart( selector, 135, 92, style, frequency, time); is not owned by me. chart() is from util class. above snippet works fine with break point. But when I remove the breakpoint it starts going in "if" block always. Hows can I solve this issue.

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  • how to change a price based on selections.

    - by SarmenHB
    please someone help me. i have posted this 2 days ago on stack overflow but no one has answered. i am pulling my hair and cant figure out what to do. here is my original post. attempt to create apple like shopping cart page (price updates based on customization selections) i dont know what this type of cart is called and i have spent days on google and cannot find one single tutorial that explains how i can do this. how the heck has the developer at apple or dell or hp learned to create such a thing. the knowledge came from somewhere....

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  • How to call virtual function of an object in C++

    - by SoonDead
    I'm struggling with calling a virtual function in C++. I'm not experienced in C++, I mainly use C# and Java so I might have some delusions, but bear with me. I have to write a program where I have to avoid dynamic memory allocation if possible. I have made a class called List: template <class T> class List { public: T items[maxListLength]; int length; List() { length = 0; } T get(int i) const { if (i >= 0 && i < length) { return items[i]; } else { throw "Out of range!"; } }; // set the value of an already existing element void set(int i, T p) { if (i >= 0 && i < length) { items[i] = p; } else { throw "Out of range!"; } } // returns the index of the element int add(T p) { if (length >= maxListLength) { throw "Too many points!"; } items[length] = p; return length++; } // removes and returns the last element; T pop() { if (length > 0) { return items[--length]; } else { throw "There is no element to remove!"; } } }; It just makes an array of the given type, and manages the length of it. There is no need for dynamic memory allocation, I can just write: List<Object> objects; MyObject obj; objects.add(obj); MyObject inherits form Object. Object has a virtual function which is supposed to be overridden in MyObject: struct Object { virtual float method(const Input& input) { return 0.0f; } }; struct MyObject: public Object { virtual float method(const Input& input) { return 1.0f; } }; I get the elements as: objects.get(0).method(asdf); The problem is that even though the first element is a MyObject, the Object's method function is called. I'm guessing there is something wrong with storing the object in an array of Objects without dynamically allocating memory for the MyObject, but I'm not sure. Is there a way to call MyObject's method function? How? It's supposed to be a heterogeneous collection btw, so that's why the inheritance is there in the first place. If there is no way to call the MyObject's method function, then how should I make my list in the first place?

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  • Jquery remove and add back click event

    - by London
    Is it possible to remove than add back click event to specific element? i.e I have a $("#elem").click(function{//some behaviour});, $(".elem").click(function{//some behaviour});(there are more than 1 element) while my other function getJson is executing I'd like to remove the click event from the #elem, and add it again onsuccess from getJson function, but preserve both mouseenter and mouseleave events the whole time? Or maybe create overlay to prevent clicking like in modal windows? is that better idea? edit : I've seen some really good answers, but there is one detail that I omitted not on purpose. There are more than one element, and I call the click function on the className not on elementId as I stated in the original question

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  • changing text periodically in a span from an array with jquery

    - by Peter Clark
    I have a span, eg: <p>Here is a sentence <span id="rotate">this</span> is what changes</p> and I'd like the contents of that span to change every few moments between a list of terms, so the contents might change to be: <span id="rotate">then</span> <span id="rotate">thus</span> and so on. I'd like the text to fade out and then the new text fade in. Whats the best way to do this via jquery?

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  • Getting the position of the element in a list when it's drag/dropped (ui.sortable)

    - by Wurlitzer
    Hi, I have a sortable list like this one: http://jqueryui.com/demos/sortable Is it possible to get the start and end position of the element in the list, when it has been moved? I'm talking about their position number, in the list. For example, if I move element 2 to position 5 in the list, I'd like to assign those two numbers to variables. I'm new to jQuery - any help would be much appreciated.

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  • select dropdown option by value using jquery

    - by user1765862
    I have select following html structure <select id="mainMenu" data-mini="true" name="select-choice-min"> <option value="1">1</option> <option value="2">2</option> <option value="3">3</option> <option value="4">4</option> <option value="5">5</option> <option value="6">6</option> </select> on page load I want initially set option with value 5 so I tried (but nothing changed) $(document).ready(function () { $('#mainMenu option').eq(5).prop('selected', true); }) I'm using jquery 1.8.3 and jqueyr mobile since this is mobile website <script src="/Scripts/jquery-1.8.3.js"></script> <script src="/Scripts/jquery.mobile-1.4.2.js"></script> UPDATE: I just realize that every code from posted answers works (as well as mine), #mainMenu option value is set to desired value (5) but it's text doesnt change (in any of this scenarios). Is this normal and is there workarround for this. I tried $("mainMenu").text("5");

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  • How to show back and forward button on popup opened thru window.open or self.open?

    - by M Sach
    i am opening the popup window with below code snippet self.open('myJSPPage','ServicePopUp','height=600,width=800,resizable=yes,scrollbars=yes,toolbar=yes,menubar=yes,location=yes'); Once the window opens i do not see any back button or forward button on popup. I just see title then address bar under it and then myJSPPage under address bar. I am not getting how to show back and forward button on popup?

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  • The best way to write a jQuery plugin - If there is such a way?

    - by Nick Lowman
    There are quite a few ways to write plugins i.e. here's a nice example and what I've seen quite a lot of lately is the following code pattern and it's used by Doug Neiner here; (function($){ $.formatLink = function(el, options){ var base = this; base.$el = $(el); base.el = el; base.$el.data("formatLink", base); base.init = function(){ base.options = $.extend({}, $.formatLink.defaultOptions, options); //code here } base.init(); }; $.formatLink.defaultOptions = { }; $.fn.formatLink = function(options){ return this.each(function(){ (new $.formatLink(this, options)); }); }; })(jQuery); So, can anyone tell me the benefits of using the pattern above rather than the one below. I can't see the point in calling the $.extend function for every element in the jQuery stack (above), where the example below only does this once and then works on the stack. To test it I created two plugins, using both patterns, which applied styles to about 5000 li elements and the code below took about 1 second whereas the pattern above took about 1.3 seconds. (function($){ $.fn.formatLink = function(options){ var options = $.extend({}, $.fn.formatLink.defaultOptions, options || {}); return this.each(function(){ //code here }); }); $.fn.formatLink.defaultOptions ={} })(jQuery);

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  • Image not showing in Chrome

    - by dmr
    I am attempting to set the source of an image. The image shows up correctly in IE and Firefox, but it doesn't show in Chrome. //image is set to 1 or 2 document.getElementById("loadImg").src = "./images/loading" + image + ".gif"; What do I have to change for this to work in Chrome?

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  • Is there a good in-browser code editor?

    - by levik
    We've all seen in-browser rich text editors, which allow you to edit colored/styled text in a WYSIWYG manner. But what about code editors, which automatically highlight code based on language rules as you type? Think Eclipse in a textarea (but without the refactoring support). Do such things exist? I imagine scaling would be a problem - larger files would be difficult to edit efficiently.

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  • reset all logged in users after they shutdown their consoled

    - by gin
    i have list of student who have Nintendo DSs, and they should log in my website to solve some sheets (by using DS Opera browser), when they logged in , (status filed at my DB will change from 0 to 1),also the status change to 0 if they log out, what i need is when the student didn't log out and Shut down their DS's , the status should be 0,, i don't have an idea to it, any suggestion would be helpful for me .. FYI ,DS opera browser limitation here

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  • How to use 'this' in jQuery plugin callback?

    - by Bondye
    At the moment I am creating a jQuery plugin. I am facing a problem when using a callback. Plugin code $.fn.bondye = function (options) { var settings = $.extend({ callback: function () {} }, options); return this.each(function () { $(this).addClass('test'); settings.callback(); }); }; How I want to execute the code $(".myDiv").bondye({ callback: function () { $(this).removeClass("test"); } }); jsFiddle example: http://jsfiddle.net/HEJtm/1/ But I aint able to do anything with the div within the callback. I used http://learn.jquery.com/plugins/advanced-plugin-concepts/ to learn developing jQuery plugins, but I cannot find anything about callbacks.

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  • How to update content of one ArrayController from the selected value of another ArrayController in Ember.js

    - by CodeHugger
    I have the following problem in ember.js. A child controller depends on a selected value in a parent controller in order to determine its content. In the database a child has a parent_id reference. App.parentsController = Em.ArrayController.create({ content: [], selected: null }); App.sonsController = Em.ArrayController.create({ // the value of content depends on the id of // the selected item in the parentsController content: [], selected: null }); App.daughtersController = Em.ArrayController.create({ // the value of content depends on the id of // the selected item in the parentsController content: [], selected: null }); I would prefer to solve this without the parentsController having to know anything about the other controllers. This should be possible with observers, bindings or even through calculations but I have no clue where to start. Any help would be well appreciated.

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  • Cant get JavaScipt to check for null objects

    - by CountMurphy
    I really don't know what the issue is here. Far as I can see, the code is simple and should work fine. var Prices=""; for (var PriceCount = 1; PriceCount <= 120; PriceCount++) { var CurrentPrice = "Price" + PriceCount; if (prevDoc.getElementById(CurrentPrice).value != null) { if (Prices == "") { Prices = prevDoc.getElementById(CurrentPrice).value; } else { Prices += "," + prevDoc.getElementById(CurrentPrice).value; } } else { break; } } There could be up to 120 hidden inputs on the form. The moment we check for an input that doesn't exist the loop should break. My test page has two input elements that get pulled. On the third (the null) I get this error in firebug: prevDoc.getElementById(CurrentPrice) is null if (prevDoc.getElementById(CurrentPrice).value != null) { Yes it is null...that's what the check is for ?_? Does any one know what I'm doing wrong? This seems like it should be really straight forward. EDIT: for clarity's sake, prevDoc=window.opener.document

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  • history.go(-1) function not refreshing server side controls

    - by Sumit Gupta
    hi, I am using a dropdown, a devexpress grid view and a button on my page. My gropdown contains the months in the format MM/YYYY, and on dropdown's selection change the data binds in the grid view. the functionality of button is to go on previous page as same as back button of browser. Now, my prob is that if i select any month and then select another month, the data changes. but now when i click on back button having onclick ="history.go(-1)", changes the data on the grid view but the month in the dropdown remains the same. For example: Suppose, first i have month selected as 02/2010 At this time the data in grid view is for exapmle 01234 now when i select month 03/2010 the data in grid changes to 56789 now when i click on back button, then data in grid changes to 01234 but the month in dropdown remains to 03/2010. Please help me for this.. Thanks in advance for all who will give solution for this.

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  • Firefox can not layout nested tables properly?

    - by ooplidi
    I want to implement a collapsible menu. I plan to use table component to simulate a menu, and nest a sub table into a table cell to simulate a sub menu. Below is my code, it works as expected in IE, Chrome and Safari, but it doesn't work well in Firefox: <html> <body> <div id="menu" style="position:absolute; left:150px; top:100px; z-index:1"> <table width="200px" height="90" border=1 cellpadding="0" cellspacing="0"> <tr> <td colspan=2>Money</td> </tr> <tr> <td colspan=2>Tool</td> </tr> <tr> <td>Food <table style="position:absolute; left:200px; top:60px; z-index:1" width="200px" height="60px" border="1" cellpadding="0" cellspacing="0"> <tr> <td>Cookie</td> </tr> <tr> <td>Fruit <table style="position:absolute; left:200px; top:30px; z-index:1" width="200px" height="60px" border="1" cellpadding="0" cellspacing="0"> <tr> <td>Apple</td> </tr> <tr> <td>Banana</td> </tr> </table> </td> </tr> </table> </td> </tr> </table> </div> </body> </html> It seems that Firefox think the "left" and "top" attribute for the level 3 menu is relative to the level 1 menu, so it layout the level 3 menu incorrectly. Other browsers will calculate the offset base on the level 2 menu, that works as expected. Is it a bug in Firefox? If so how can I work around it? I want my code to have the same behavior in all major browsers.

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  • JS DOM: Get elements by text content.

    - by hristo
    Hello! I am looking for a way to perform fulltext search on the DOM tree with JS. In two words, I would like to retrieve the list of text nodes which contain a given string. I've tried mootools' Element.getElements ( ':contains[string]' ) but I can't get it to work with strings containing whitespace. I'm thinking about simply indexing all text nodes and checking against each node for the string being searched for, but, in my project, there's no way of telling when the DOM updates in order to maintain such an index up-to-date. Any better ideas? Thanks

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  • What are the best security measures to take for making certain directories private?

    - by Sattvic
    I have a directory on my server that I do not want Search Engines to crawl and I already set this rule in robots.txt I do want people that have logged in to be able to have access to this directory without having to enter a password or anything. I am thinking that a cookie is the best thing to put on users computers after they login, and if they have a cookie, they can access the directory. Is this possible, or is there a better way? I want people without this cookie to not have access to this directory - access for members only Any suggestions on the best design for this?

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  • Protecting routes with authentication in an AngularJS app

    - by Chris White
    Some of my AngularJS routes are to pages which require the user to be authenticated with my API. In those cases, I'd like the user to be redirected to the login page so they can authenticate. For example, if a guest accesses /account/settings, they should be redirected to the login form. From brainstorming I came up with listening for the $locationChangeStart event and if it's a location which requires authentication then redirect the user to the login form. I can do that simple enough in my applications run() event: .run(['$rootScope', function($rootScope) { $rootScope.$on('$locationChangeStart', function(event) { // Decide if this location required an authenticated user and redirect appropriately }); }]); The next step is keeping a list of all my applications routes that require authentication, so I tried adding them as parameters to my $routeProvider: $routeProvider.when('/account/settings', {templateUrl: '/partials/account/settings.html', controller: 'AccountSettingCtrl', requiresAuthentication: true}); But I don't see any way to get the requiresAuthentication key from within the $locationChangeStart event. Am I overthinking this? I tried to find a way for Angular to do this natively but couldn't find anything.

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  • how to hide the image? how can i do ?

    - by user309381
    function Psend() { new Ajax.Request('Handler.ashx', { method: 'get', onSuccess: function(transport) { var response = transport.responseText || "no response text"; //alert("Success! \n\n" + response); var obj = response.evalJSON(true); for (i = 0; i < 4; i++) { DeCheBX = $('MyDiv').insert(new Element('input', { 'type': 'checkbox', 'id': "img" + obj[i].Nam, 'value': obj[i].IM, 'onClick': 'SayHi(this)' })); DeImg = $('MyDiv').insert(new Element('img', { 'id': "img" + obj[i].Nam, 'src': obj[i].IM, 'style': 'display = inline', 'onClick': 'Say(this)' })); document.body.appendChild(DeCheBX); document.body.appendChild(DeImg); } }, onFailure: function() { alert('Something went wrong...') } }); SayHi = function(x) { if ($(x).checked == true) { // $('id').hide(); **$('img'+i).style.visibility = "hidden";**// doesnt work } };

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