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2014/10/16 ¤W¤È 12:04:41
jquery Programming Glossary: let'sWhat does !function ($) { $(function(){ }) }(window.jQuery) do? http://stackoverflow.com/questions/10896749/what-does-function-function-window-jquery-do functions Now they are using function window.jQuery Let's skip the for now. So they are passing window.jQuery into that.. TypeError undefined is not a function Why this happens Let's simulate how JS engines executes the above code block. It executes..
How to solve/hack fading semi-transparent PNG bug in IE8? http://stackoverflow.com/questions/1204457/how-to-solve-hack-fading-semi-transparent-png-bug-in-ie8 any idea for solve this question by using jQuery. Update Let's see my testing As you see IE8 always incorrectly displays PNG..
jQuery Validate - require at least one field in a group to be filled http://stackoverflow.com/questions/1300994/jquery-validate-require-at-least-one-field-in-a-group-to-be-filled 1 I might be valid if you're valid. Are you Element 2 Let's see. I might be valid if YOU'RE valid. Are you Element 1 Let's.. see. I might be valid if YOU'RE valid. Are you Element 1 Let's see. I might be valid if YOU'RE valid. Are you ...etc until..
How do I “think in AngularJS” if I have a jQuery background? http://stackoverflow.com/questions/14994391/how-do-i-think-in-angularjs-if-i-have-a-jquery-background visible but I'll provide just one common example testing. Let's say in our application we require a service that implements..
javascript - How to make this code work? [duplicate] http://stackoverflow.com/questions/16472577/javascript-how-to-make-this-code-work createGlobal var local 2 foo bar local createGlobal Let's look at foo JS is in createGlobal scope var local is declared..
jQuery “Please Wait, Loading…” animation? [duplicate] http://stackoverflow.com/questions/1964839/jquery-please-wait-loading-animation will show you how to accomplish both methods. The Setup Let's start by getting us a nice loading animation from http ajaxload.info.. I'll be using http i.stack.imgur.com FhHRx.gif . Let's create an element that we can show hide anytime we're making..
http://stackoverflow.com/questions/3233991/jquery-watch-div there any way to watch if the content within a div changes Let's say I have div id hello p Some content here p div Which at some..
jqGrid: Disable form fields when editing http://stackoverflow.com/questions/3405029/jqgrid-disable-form-fields-when-editing poor . Anyway enough background information I suppose. Let's get to the point I use the navbar which is built in to jqGrid..
firing event on DOM attribute change http://stackoverflow.com/questions/4561845/firing-event-on-dom-attribute-change any way to trigger event may be custom on attribute change Let's say when IMG src is changed or DIV's innerHtml javascript jquery..
http://stackoverflow.com/questions/5035547/pass-javascript-array-php Javascript Array PHP Let's say I have a javascript array with a bunch of elements anywhere..
http://stackoverflow.com/questions/5424055/check-if-images-are-loaded is that you can attach it to only a subset of the DOM. Let's say you have your slideshow images in a div like this div class..
Official way to ask jQuery wait for all images to load before executing something http://stackoverflow.com/questions/544993/official-way-to-ask-jquery-wait-for-all-images-to-load-before-executing-somethin such as showing or hiding elements or attaching events. Let's say though that I want some animation and I don't want it running..
Long Polling/HTTP Streaming General Questions http://stackoverflow.com/questions/7213549/long-polling-http-streaming-general-questions systems I'll mention just couple of them Task queues. Let's say we're writing our own YouTube and need to convert users'.. chat message appears. And a message queue is that someone. Let's say we're using Redis key value store this is a really great..
Why should y.innerHTML = x.innerHTML; be avoided? http://stackoverflow.com/questions/7392930/why-should-y-innerhtml-x-innerhtml-be-avoided should y.innerHTML x.innerHTML be avoided Let's say that we have a DIV x on the page and we want to duplicate..
get CSS rule's percentage value in jQuery http://stackoverflow.com/questions/744319/get-css-rules-percentage-value-in-jquery CSS rule's percentage value in jQuery Let's say the rule is as follows .largeField width 65 Is there a way..
jQuery memory leak with DOM removal http://stackoverflow.com/questions/1462649/jquery-memory-leak-with-dom-removal this Commenting out that line resulted in no leak. So let's look at event.remove it calls data 'events' to see if there..
How do I “think in AngularJS” if I have a jQuery background? http://stackoverflow.com/questions/14994391/how-do-i-think-in-angularjs-if-i-have-a-jquery-background driven development iteratively in AngularJS For example let's say we want a super simple directive to indicate in our menu.. . This is a necessity. Treat it with due deference But let's dive a little deeper... Some directives just decorate what's..
How can I use jQuery to style /parts/ of all instances of a specific word? http://stackoverflow.com/questions/1501007/how-can-i-use-jquery-to-style-parts-of-all-instances-of-a-specific-word of a specific word Unusual situation. I have a client let's call them BuyNow. They would like for every instance of their..
jQuery “Please Wait, Loading…” animation? [duplicate] http://stackoverflow.com/questions/1964839/jquery-please-wait-loading-animation div class modal Place at bottom of page div The CSS Next let's give it some flair Start by setting display none to make this..
What does (function($) {})(jQuery); mean? http://stackoverflow.com/questions/2937227/what-does-function-jquery-mean function is mealy a function that is executed in place let's break it down a little. 1. 2. function 3. 4. Line 2 is a plain..
http://stackoverflow.com/questions/3015335/jquery-html-vs-append this is what happens A temporary element is created let's call it x. x's innerHTML is set to the string of HTML that you've..
Jquery repeat function every 60 seconds http://stackoverflow.com/questions/3138756/jquery-repeat-function-every-60-seconds I would like to execute the function every 60 seconds let's say . javascript jquery share improve this question If..
I'd like to understand the jQuery plugin syntax http://stackoverflow.com/questions/4484289/id-like-to-understand-the-jquery-plugin-syntax value of we would do this function ... 3 Just for kicks let's call this function and pass in jQuery as a variable function..
jQuery Ajax POST example with php http://stackoverflow.com/questions/5004233/jquery-ajax-post-example-with-php request.abort setup some local variables var form this let's select and cache all the fields var inputs form.find input select.. the data in the form var serializedData form.serialize let's disable the inputs for the duration of the ajax request inputs.prop..
JQM (jQueryMobile) Dynamically added elements not displaying correctly and CSS is not applied http://stackoverflow.com/questions/5249250/jqm-jquerymobile-dynamically-added-elements-not-displaying-correctly-and-css-i '' they may be able to toggle between valid options too. let's avoid that using a class we can apply var c 'alreadyMadeASelection'..
How to debug Javascript/jQuery event bindings with FireBug (or similar tool) http://stackoverflow.com/questions/570960/how-to-debug-javascript-jquery-event-bindings-with-firebug-or-similar-tool pieces of code to try to pinpoint the problem. But let's assume I cannot edit the application code and need to work entirely..
How to select html nodes by ID with jquery when the id contains a dot? http://stackoverflow.com/questions/605630/how-to-select-html-nodes-by-id-with-jquery-when-the-id-contains-a-dot work not to mention the loss in readability. Note Please let's not start talking about how tables are not made for lay outing...
jQuery.getJSON - Access-Control-Allow-Origin Issue http://stackoverflow.com/questions/6396623/jquery-getjson-access-control-allow-origin-issue script would look for the callback query string parameter let's say that the parameter's value is jsop123 and wraps that JSON..
Why should y.innerHTML = x.innerHTML; be avoided? http://stackoverflow.com/questions/7392930/why-should-y-innerhtml-x-innerhtml-be-avoided this be done instead Update For the sake of this question let's assume that there are no elements with ID's inside the DIV x..
jQuery.ajax handling continue responses: “success:” vs “.done”? http://stackoverflow.com/questions/8840257/jquery-ajax-handling-continue-responses-success-vs-done that can be bound to anywhere else in your application. So let's say you want to make this ajax call from a few different places...
Fire event each time a DropDownList item is selected with jQuery http://stackoverflow.com/questions/898463/fire-event-each-time-a-dropdownlist-item-is-selected-with-jquery when I select different value from the dropdown however let's say I want to select the same value again. because I want to..
How to change color of an image using jquery [closed] http://stackoverflow.com/questions/9303757/how-to-change-color-of-an-image-using-jquery 0xff G long 8 0xff B long 0xff Now here is the magic part let's loop through the pixel data and multiply it to the color from..
Is it possible to use jQuery .on and hover? http://stackoverflow.com/questions/9827095/is-it-possible-to-use-jquery-on-and-hover div in question is populated using JavaScript. For example let's say you populate a div using jQuery's .load event like so function..
What does !function ($) { $(function(){ }) }(window.jQuery) do? http://stackoverflow.com/questions/10896749/what-does-function-function-window-jquery-do this post here http helephant.com 2008 08 23 javascript anonymous functions Now they are using function window.jQuery Let's skip the for now. So they are passing window.jQuery into that function as argument and accepting as . What this does is.. you will get two alerts but then you will get this error TypeError undefined is not a function Why this happens Let's simulate how JS engines executes the above code block. It executes this anonymous function function alert 'first' shows..
How to solve/hack fading semi-transparent PNG bug in IE8? http://stackoverflow.com/questions/1204457/how-to-solve-hack-fading-semi-transparent-png-bug-in-ie8 is displayed with non transparent black color. Do you have any idea for solve this question by using jQuery. Update Let's see my testing As you see IE8 always incorrectly displays PNG 24 image. Moreover IE8 still correctly display PNG 8 image..
jQuery Validate - require at least one field in a group to be filled http://stackoverflow.com/questions/1300994/jquery-validate-require-at-least-one-field-in-a-group-to-be-filled has to check each other element. It would be like Element 1 I might be valid if you're valid. Are you Element 2 Let's see. I might be valid if YOU'RE valid. Are you Element 1 Let's see. I might be valid if YOU'RE valid. Are you ...etc until.. 1 I might be valid if you're valid. Are you Element 2 Let's see. I might be valid if YOU'RE valid. Are you Element 1 Let's see. I might be valid if YOU'RE valid. Are you ...etc until we get a too much recursion error. So instead we 1 Flag all..
How do I “think in AngularJS” if I have a jQuery background? http://stackoverflow.com/questions/14994391/how-do-i-think-in-angularjs-if-i-have-a-jquery-background or anything like that. The power may not immediately be visible but I'll provide just one common example testing. Let's say in our application we require a service that implements server side storage through a REST API and depending on application..
javascript - How to make this code work? [duplicate] http://stackoverflow.com/questions/16472577/javascript-how-to-make-this-code-work without so much as a peep var bar 666 global always evil function createGlobal var local 2 foo bar local createGlobal Let's look at foo JS is in createGlobal scope var local is declared and assigned 2. foo is used and assigned bar local found..
jQuery “Please Wait, Loading…” animation? [duplicate] http://stackoverflow.com/questions/1964839/jquery-please-wait-loading-animation while the new data is loading. The approach I'm taking below will show you how to accomplish both methods. The Setup Let's start by getting us a nice loading animation from http ajaxload.info I'll be using http i.stack.imgur.com FhHRx.gif . Let's.. start by getting us a nice loading animation from http ajaxload.info I'll be using http i.stack.imgur.com FhHRx.gif . Let's create an element that we can show hide anytime we're making an ajax request div class modal Place at bottom of page div..
http://stackoverflow.com/questions/3233991/jquery-watch-div watch div Is there any way to watch if the content within a div changes Let's say I have div id hello p Some content here p div Which at some point 5 seconds later changes to div id hello ul li This..
jqGrid: Disable form fields when editing http://stackoverflow.com/questions/3405029/jqgrid-disable-form-fields-when-editing I do really like it even though the documentation is rather poor . Anyway enough background information I suppose. Let's get to the point I use the navbar which is built in to jqGrid to Add Edit and Delete items from the grid. I've got this..
firing event on DOM attribute change http://stackoverflow.com/questions/4561845/firing-event-on-dom-attribute-change event on DOM attribute change is there any way to trigger event may be custom on attribute change Let's say when IMG src is changed or DIV's innerHtml javascript jquery events dom javascript events share improve this question..
http://stackoverflow.com/questions/5035547/pass-javascript-array-php Javascript Array PHP Let's say I have a javascript array with a bunch of elements anywhere from 50 200 . I want to send that to PHP prepared statement..
http://stackoverflow.com/questions/5424055/check-if-images-are-loaded .load is what you're looking for. What's great about this event is that you can attach it to only a subset of the DOM. Let's say you have your slideshow images in a div like this div class slideshow style display none img src image1.png img src..
Official way to ask jQuery wait for all images to load before executing something http://stackoverflow.com/questions/544993/official-way-to-ask-jquery-wait-for-all-images-to-load-before-executing-somethin is obviously what we want if we're initializing any DOM stuff such as showing or hiding elements or attaching events. Let's say though that I want some animation and I don't want it running until all the images are loaded. Is there an official..
Long Polling/HTTP Streaming General Questions http://stackoverflow.com/questions/7213549/long-polling-http-streaming-general-questions systems. It has many applications to the real world systems I'll mention just couple of them Task queues. Let's say we're writing our own YouTube and need to convert users' video files in the background. We should obviously have a webapp.. . We would rather need someone to notify us when a new chat message appears. And a message queue is that someone. Let's say we're using Redis key value store this is a really great tool that provides PubSub implementation among its data store..
Why should y.innerHTML = x.innerHTML; be avoided? http://stackoverflow.com/questions/7392930/why-should-y-innerhtml-x-innerhtml-be-avoided should y.innerHTML x.innerHTML be avoided Let's say that we have a DIV x on the page and we want to duplicate copy paste the contents of that DIV into another DIV y . We..
get CSS rule's percentage value in jQuery http://stackoverflow.com/questions/744319/get-css-rules-percentage-value-in-jquery CSS rule's percentage value in jQuery Let's say the rule is as follows .largeField width 65 Is there a way to get '65 ' back somehow and not the pixel value Thanks...
jQuery memory leak with DOM removal http://stackoverflow.com/questions/1462649/jquery-memory-leak-with-dom-removal line 1244 in 1.3.2 jQuery.event.remove this jQuery.removeData this Commenting out that line resulted in no leak. So let's look at event.remove it calls data 'events' to see if there are any events attached to the element. What is data doing Compute..
How do I “think in AngularJS” if I have a jQuery background? http://stackoverflow.com/questions/14994391/how-do-i-think-in-angularjs-if-i-have-a-jquery-background us But because we have separation of concerns we can do test driven development iteratively in AngularJS For example let's say we want a super simple directive to indicate in our menu what our current route is. We can declare what we want in our.. You'll often hear only do DOM manipulation in a directive . This is a necessity. Treat it with due deference But let's dive a little deeper... Some directives just decorate what's already in the view think ngClass and therefore sometimes do..
How can I use jQuery to style /parts/ of all instances of a specific word? http://stackoverflow.com/questions/1501007/how-can-i-use-jquery-to-style-parts-of-all-instances-of-a-specific-word can I use jQuery to style parts of all instances of a specific word Unusual situation. I have a client let's call them BuyNow. They would like for every instance of their name throughout the copy of their site to be stylized like..
jQuery “Please Wait, Loading…” animation? [duplicate] http://stackoverflow.com/questions/1964839/jquery-please-wait-loading-animation that we can show hide anytime we're making an ajax request div class modal Place at bottom of page div The CSS Next let's give it some flair Start by setting display none to make this hidden. Then we position it in relation to the viewport window..
What does (function($) {})(jQuery); mean? http://stackoverflow.com/questions/2937227/what-does-function-jquery-mean improve this question Firstly a code block that looks like function is mealy a function that is executed in place let's break it down a little. 1. 2. function 3. 4. Line 2 is a plain function wrapped in parenthesis to tell the runtime to return..
http://stackoverflow.com/questions/3015335/jquery-html-vs-append Whenever you pass a string of HTML to any of jQuery's methods this is what happens A temporary element is created let's call it x. x's innerHTML is set to the string of HTML that you've passed. Then jQuery will transfer each of the produced..
Jquery repeat function every 60 seconds http://stackoverflow.com/questions/3138756/jquery-repeat-function-every-60-seconds the function multiple times Every time a time interval passes I would like to execute the function every 60 seconds let's say . javascript jquery share improve this question If you don't care if the code within the timer may take longer..
I'd like to understand the jQuery plugin syntax http://stackoverflow.com/questions/4484289/id-like-to-understand-the-jquery-plugin-syntax if we wanted to call this function passing in 3 for the value of we would do this function ... 3 Just for kicks let's call this function and pass in jQuery as a variable function .... jQuery This creates a new function that takes one argument..
jQuery Ajax POST example with php http://stackoverflow.com/questions/5004233/jquery-ajax-post-example-with-php .submit function event abort any pending request if request request.abort setup some local variables var form this let's select and cache all the fields var inputs form.find input select button textarea serialize the data in the form var serializedData.. var inputs form.find input select button textarea serialize the data in the form var serializedData form.serialize let's disable the inputs for the duration of the ajax request inputs.prop disabled true fire off the request to form.php request..
JQM (jQueryMobile) Dynamically added elements not displaying correctly and CSS is not applied http://stackoverflow.com/questions/5249250/jqm-jquerymobile-dynamically-added-elements-not-displaying-correctly-and-css-i var onChange function e val ' selected' this .val '' if val '' they may be able to toggle between valid options too. let's avoid that using a class we can apply var c 'alreadyMadeASelection' if this .hasClass c return now take the current select..
How to debug Javascript/jQuery event bindings with FireBug (or similar tool) http://stackoverflow.com/questions/570960/how-to-debug-javascript-jquery-event-bindings-with-firebug-or-similar-tool add a bunch of Firebug console.log statements and comment uncomment pieces of code to try to pinpoint the problem. But let's assume I cannot edit the application code and need to work entirely in Firefox using Firebug or similar tools. Firebug is..
How to select html nodes by ID with jquery when the id contains a dot? http://stackoverflow.com/questions/605630/how-to-select-html-nodes-by-id-with-jquery-when-the-id-contains-a-dot annoying thing is that renaming all my id's would be a lot of work not to mention the loss in readability. Note Please let's not start talking about how tables are not made for lay outing. I'm verry aware of the value and shortcommings of CSS and..
jQuery.getJSON - Access-Control-Allow-Origin Issue http://stackoverflow.com/questions/6396623/jquery-getjson-access-control-allow-origin-issue start but soon brightening into a fine summer day. Your script would look for the callback query string parameter let's say that the parameter's value is jsop123 and wraps that JSON in the syntax for a JavaScript function call jsonp123 weather..
Why should y.innerHTML = x.innerHTML; be avoided? http://stackoverflow.com/questions/7392930/why-should-y-innerhtml-x-innerhtml-be-avoided be avoided. 1 Why should this method be avoided 2 How should this be done instead Update For the sake of this question let's assume that there are no elements with ID's inside the DIV x . Sorry I forgot to cover this case in my original question...
jQuery.ajax handling continue responses: “success:” vs “.done”? http://stackoverflow.com/questions/8840257/jquery-ajax-handling-continue-responses-success-vs-done is that the return value of .ajax is now a deferred promise that can be bound to anywhere else in your application. So let's say you want to make this ajax call from a few different places. Rather than passing in your success function as an option..
Fire event each time a DropDownList item is selected with jQuery http://stackoverflow.com/questions/898463/fire-event-each-time-a-dropdownlist-item-is-selected-with-jquery like this '#dropdownid' .change function ...... Now this works when I select different value from the dropdown however let's say I want to select the same value again. because I want to make another call with the same value So when I select it again..
How to change color of an image using jquery [closed] http://stackoverflow.com/questions/9303757/how-to-change-color-of-an-image-using-jquery hex var long parseInt hex.replace ^# 16 return R long 16 0xff G long 8 0xff B long 0xff Now here is the magic part let's loop through the pixel data and multiply it to the color from the color picker. on my script there is no color picker I..
Is it possible to use jQuery .on and hover? http://stackoverflow.com/questions/9827095/is-it-possible-to-use-jquery-on-and-hover answers provided below detail how .on should work if the div in question is populated using JavaScript. For example let's say you populate a div using jQuery's .load event like so function append div to document body ' div class selector Test..
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