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  • __proto__ of a function

    - by alter
    if I have a class called Person. var Person = function(fname, lname){ this.fname = fname; this.lname = lname; } Person.prototype.mname = "Test"; var p = new Person('Alice','Bob'); Now, p.proto refers to prototype of Person but, when I try to do Person.proto , it points to function(), and Person.constructor points to Function(). can some1 explain what is the difference between function() and Function() and why prototype of a Function() class is a function()

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  • stick element to top of page until next element of that type appears

    - by aharon
    I'm having a hard time giving a good description of this, but bear with me: If I have a page structed like this <h2>Chapter 1</h2> <p>Lots of text that has mutiple screen worths of content</p> <h2>Chapter 2</h2> <p>Lots of text...</p> I'd like to have "Chapter 1" absolutely positioned or whatever at the top of the page until the user scrolls down to where "Chapter 2" starts, at which point now "Chapter 2" is displayed at the top of the page. We can add wrapper classes and divs if needed. Solutions that use JQuery would be great.

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  • displaying the different uploaded files as thumbnails or any other way

    - by user1529342
    I have written code to upload the files of different types using php, and also i am saving their location information and date in database table. i made a query to display list of files i have uploaded...and resulting output on a html page as follows 1.uploads/clouds.png date and time 2.uploads/resume.pdf dare and time .......so on is there any different any way to display them by their file types as like an operating systems do..... or any better way.... I am curious to know it... Thanks for any help...

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  • jQuery version of YAHOO.lang (isUndefined, isNull, isString etc.)

    - by Chris S
    Does anyone know of a jQuery plugin that has 'helpers' or extensions like those found in the YAHOO.lang namespace? I have in mind functions such as: isNull isDefined isString isFunction I would also appreciate the same kind of thing for strings and arrays, such as Contains, StartsWith (I know these are easy to write, I'm just looking for a plugin that encompasses them all). It's not in the YAHOO.lang namespace but also form related extensions- determining a radiobox's value (from the one checked), a form element's type in a friendly name. Specifically a plugin with fluent API rather than selector based such as $("input[@type=radio][@checked]") Again I'm aware they're easy to implement but I don't want to reinvent the wheel.

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  • setTimeout is acting weird

    - by mnish
    I am trying to make a simple setTimeout, to make a div tag invisible after 2 seconds. The setTimeout function makes the div invisible but irregularly, sometimes immediately and sometimes after 1 sec, and so on. Here is my code: function beginTimeOut(){ t = setTimeout(function(){hideSubMenu()},2000); } function hideSubMenu(){ var elem; elem = document.getElementById("ul_navlist1"); elem.style.visibility="hidden"; clearTimeout(t); } By the way, t is a global variable. I have tried this too: t = setTimeout("hideSubMenu()",2000); but with the same irregular results.

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  • How does dzone.com maintain state of the div?

    - by CShipley
    When you scroll down to the bottom of http://www.dzone.com/links/ it automatically loads more links. However, when you navigate away, then hit the back button, the contents of the modified div stay there. How do they get the browser to go back to a dynamically generated div?

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  • Confirm box when browser/Tag close button clicks

    - by user1316760
    I have created my website for this I like to create confirm box when user clicks browser close button..... So i created my coding as window.onbeforeunload = bunload; function bunload() { dontleave = "Are you sure you want to leave?"; return dontleave; } By this coding I got confirm box for each and every time when browser get loading.....I need confirm box when user only clicks browser close button...... Can anyone give me a idea

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  • JQuery conflict with body onload event.

    - by Evgeny
    Strange conflict in my code. I have function that called from body onload: var someGlobalVar=new SpecialType(); function OnBodyLoad() { someGlobalVar.Bind(); } but when i include JQuery 1.4.2 to my project i have error that someGlobalVar is undefined. Why global variable now is undefined and what ways to fix it?

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  • How to specify java script files required by an angular app

    - by Vishal Kaushik
    I'm looking for a way to specify required js files by an angular app. So that, we don't need to include an array of tag for all the files which may be required by some ng-app. The main idea behind this requirement is - we might not need to load all the resources on the browser at once. Which ever ng-app gets loaded onto the screen, will fetch its dependencies on its own from the server. Is there any existing way within angularJS to achieve this goal..?

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  • Script that replaces strings doesn't work on some sites

    - by groovy354
    I've created a simple Chrome extension that seeks for certain strings using regex and replaces matches with predefined text. It works well on most websites, but somehow the script doesn't take effect on, for example, Lifehacker (like this page http://lifehacker.com/5939740/five-best-audio-editing-applications?popular=true ). The code is: $('p, h1, h2, h3, span, .content, .post-body').each(function(){ //do something with $(this) }); Any ideas why is Lifehacker's site resistant to my script?

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  • Jquery remove class from image

    - by user1269625
    Hey ya'll I have these 3 images thumbnails here... <div class="wpcart_gallery" style="text-align:center; padding-top:5px;"> <a class="thickbox cboxElement" title="DSC_0118" href="http://www.taranmarlowjewelry.com/wp-content/uploads/2012/07/DSC_0118.jpg" rel="Teardrop Druzy Amethyst Ring" rev="http://www.taranmarlowjewelry.com/wp-content/uploads/2012/07/DSC_0118.jpg"> <img class="attachment-gold-thumbnails colorbox-736" width="50" height="50" title="DSC_0118" alt="DSC_0118" src="http://www.taranmarlowjewelry.com/wp-content/uploads/2012/07/DSC_0118-50x50.jpg"> </a> <a class="thickbox cboxElement" title="P7230376" href="http://www.taranmarlowjewelry.com/wp-content/uploads/2012/07/P7230376.jpg" rel="Teardrop Druzy Amethyst Ring" rev="http://www.taranmarlowjewelry.com/wp-content/uploads/2012/07/P7230376.jpg"> <img class="attachment-gold-thumbnails colorbox-736" width="50" height="50" title="P7230376" alt="P7230376" src="http://www.taranmarlowjewelry.com/wp-content/uploads/2012/07/P7230376-50x50.jpg"> </a> <a class="thickbox cboxElement" title="P7230378" href="http://www.taranmarlowjewelry.com/wp-content/uploads/2012/07/P7230378.jpg" rel="Teardrop Druzy Amethyst Ring" rev="http://www.taranmarlowjewelry.com/wp-content/uploads/2012/07/P7230378.jpg"> <img class="attachment-gold-thumbnails colorbox-736" width="50" height="50" title="P7230378" alt="P7230378" src="http://www.taranmarlowjewelry.com/wp-content/uploads/2012/07/P7230378-50x50.jpg"> </a> </div> What I am trying to do is come up with a jquery code that would remove the cboxElement from the first image and if I click on one of the images to remove cboxElement and place cboxElement to the other images... I also have this big image and when you click on one of the thumbnails, the image is replaced by the thumbnail and thats really the thumbnail I want to exclude...Could I possible just say if one of the 3 images src = this one image = src remove the class from this thumbnail? Which way would be better? I am very new at jquery :( I hope this makes sense. Here is the code for the big image... <a class="preview_link cboxElement" style="text-decoration:none;" href="http://www.taranmarlowjewelry.com/wp-content/uploads/2012/07/DSC_0118.jpg" rel="Teardrop Druzy Amethyst Ring"> <img id="product_image_736" class="product_image colorbox-736" width="400" src="http://www.taranmarlowjewelry.com/wp-content/uploads/2012/07/DSC_0118.jpg" title="Teardrop Druzy Amethyst Ring" alt="Teardrop Druzy Amethyst Ring"> <br> <div style="text-align:center; color:#F39B91;">Click To Enlarge</div> </a> Any help or a point in the right direction would be awesome!!

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  • jQuery append div to a specific

    - by ip
    Hi How do I append a element a specific index of the children elements using jQuery append e.g. if I have: <div class=".container"> <div class="item"><div> <div class="item"><div> <div class="item"><div> <div class="item"><div> </div> and I want to append another item between the second and third item?

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  • keep params and add another from a form

    - by doubtful
    Hey Guys, I have the following 3 urls: http://www.test.com?a=1 http://www.test.com?a=1&b=3 http://www.test.com?a=1&b=2&c=99 Now in a form i have a drop down menu like so: <select name="b"> <option value="1">1</option> ... </select> Now i want to either add that param to the list of existing params or edit the param if its already there, then refresh the page. Any ideas? Thanks

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  • IE event for right-click delete on <input> or <textarea>

    - by Jayraj
    What event is fired when you right-click on selected text in an <input> or <textarea> tag and the click "Delete" in Internet Explorer (I'm targeting version 9, but if it's good for lower versions too, all the better). On other browsers , the "input" event appears to work for all text changes through right-click so doing $("textarea").on("input", function() {...}); works. IE works for cut and paste, but not delete (JSFiddle here) although MDN claims that IE is supported.

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  • How to resize div element less than its content?

    - by andDaviD
    I have a table and there is a TreeView in a cell. Here is my code: <style> #leftPanel { width:60px; height:'100%'; border:1px solid red; background:yellow; } <style> <table> <tr> <td> <div id="leftPanel"> <asp:PlaceHolder runat="server" ID="TreeView" /> <%-- Here is a TreeView --%> </div> </td> </tr> <%-- other code --%> <table> $(function () { $('#leftPanel').resizable( { handles: 'e, w' }); }); I can't reduce the size of my div less then the size of my TreeView. What code need I write to allow leftPanel to be less than the size of TreeView ? It is necessary if TreeView node's text too long.

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  • how to make a part of the textbox as readonly

    - by vakas
    i have a tagtextbox on my page when a user selects a category that category name goes to tagtextbox now i want that this category name user cant change but he can append some more tags means first tag becomes readonly and further he can add too in same text box

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  • Information stored in a cookie file

    - by jklmuk
    Thanks for you help in advance. I am trying to figure out the structure of the cookie file, more specifically i want to be able to determine the expiry time. From the cookies i have created they all appear to be in a standard format. Name, Value, website,followed by 5 numbers and a star. See example below. name value www.website.co.uk/ 1536 3041141504 30135951 1632526096 30135949 * Obviously the expiry time is one of the numbers, the question is which one. From experiments I have determined that the first and fifth number don't seem to change. In a case where i generated three cookies at the same time with a 1000 second time difference i noticed that the fourth number appeared to increase by 2000 suggesting that this has a connection with the expiry time. Can anyone confirm if i am heading in the right direction? And does any one know how i convert this to a human time and date(preferably in php but any language would give me a starting point) thanks Jason

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  • Backbone inheritance - deep copying

    - by Ed .
    I've seen this question regarding inheritance in Backbone: Backbone.js view inheritance. Useful but doesn't answer my question. The problem I'm experiencing is this: Say I have a class Panel (model in this example); var Panel = Backbone.Model.extend({ defaults : { name : 'my-panel' } }); And then an AdvancedPanel; var AdvancedPanel = Panel.extend({ defaults : { label : 'Click to edit' } }); The following doesn't work: var advancedPanel = new AdvancedPanel(); alert(advancedPanel.get('name')); // Undefined :( JSFiddle here: http://jsfiddle.net/hWmnb/ I guess I can see that I can achieve this myself through some custom extend function that creates a deep copy of the prototype, but this seems like a common thing that people might want from Backbone inheritance, is there a standard way of doing it?

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  • Is it possible to create a throttle function that can take in as parameters another function (that also has parameters), and the time delay

    - by Stan Quinn
    So I've already written a function that works (based on underscores throttle) for functions that don't take in a parameter, but I'd like to make it generic enough to pass in a function with a variable number of parameters. Here's what I have: (function () { var lastTime = new Date().getTime(); function foo() { var newTime = new Date().getTime(); var gap = newTime - lastTime; // Travels up scope chain to use parents lastTime. Function has access to variables declared in the same scope console.log('foo called, gap:' + gap); lastTime = newTime; // Updates lastTime //console.log(x); //x++; } var throttle = function(func, wait) { var result; var timeout = null; // flag updated through closure var previous = 0; // time last run updated through closure return function() { //func, wait, timeout, previous available through scope var now = new Date().getTime(); var remaining = wait - (now - previous); if (remaining <= 0) { clearTimeout(timeout); timeout = null; previous = now; result = func.apply(this, arguments); //func is available through closure } return result; }; }; document.addEventListener("scroll", throttle(foo, 1000)); //document.addEventListener("scroll", throttle(foo(5), 2000)); }()); But I'd like to modify foo to foo(x) and get this to work (function () { var lastTime = new Date().getTime(); function foo(x) { var newTime = new Date().getTime(); var gap = newTime - lastTime; // Travels up scope chain to use parents lastTime. Function has access to variables declared in the same scope console.log('foo called, gap:' + gap); lastTime = newTime; // Updates lastTime console.log(x); x++; } var throttle = function(func, wait) { var result; var timeout = null; // flag updated through closure var previous = 0; // time last run updated through closure return function() { //func, wait, timeout, previous available through scope var now = new Date().getTime(); var remaining = wait - (now - previous); if (remaining <= 0) { clearTimeout(timeout); timeout = null; previous = now; result = func.apply(this, arguments); //func is available through closure } return result; }; }; document.addEventListener("scroll", throttle(foo(5), 2000)); }());

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  • How do I escape backslashes in JSON?

    - by peteb
    I am using Firefox's native JSON.parse() to parse some JSON strings that include regular expressions as values, for example: var test = JSON.parse('{"regex":"/\\d+/"}'); The '\d' in the above throws an exception with JSON.parse(), but works fine when I use eval (which is what I'm trying to avoid). What I want is to preserve the '\' in the regex - is there some other JSON-friendly way to escape it?

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  • Select-all checkboxes in a FORM_TAG

    - by Horace Ho
    In a form_tag, there is a list of 10 to 15 checkboxes: <%= check_box_tag 'vehicles[]', car.id %> How can I select-all (put a tick in every single) checkboxes by RJS? Thanks EDIT: Sorry I didn't make my question clear. What I meant to ask is how to add a "Select/Un-select All" link in the same page to toggle the checkboxes.

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