JavaScript

 For such pages, we often do not submit forms to process the data, because it is very complicated to traverse and process the large amount of data in the background; it is better to save the data in json as an object on the front-end page, and then

Jquery implements a progress bar, which may have no practical effect here, but has implemented part of the principle of the progress bar. How does the front end implement that progress effect. Demo: Source code for progress bar implementation:Copy

Copy codeThe Code is as follows: Insert title here

////// 1. js obtains the attributes of the uploaded file.Var fso = new ActiveXObject ("Scripting. FileSystemObject ");Var filesize = fso. GetFile (file). size;// ActiveXObject is a feature supported by IE, which is not applicable to other browsers.//

Animate Syntax:Copy codeThe Code is as follows:$ (Selector). animate (styles, speed, easing, callback) Copy codeThe Code is as follows: Testing . Stop (); // stop the current animation and return the starting point along the road. If you click it

Copy codeThe Code is as follows:Function foo (){}SetInterval ("foo ()", 1000 ); If OO technology is used,Copy codeThe Code is as follows:// ConstructorFunction MyObj{Function foo (){Alert (this. data );}This. timer = foo;This. data = "Hello

Today, I just roughly browsed the source code of Proxy SwitchySharp and learned a lot, including reading and saving files described in this article.Because Google does not provide the ability to synchronize plug-in data, you must deal with files

Jquery mobile provides the following event listening for gesture touch:Copy codeThe Code is as follows:Tap triggered when the user clicks the screenTaphold triggered when the user clicks the screen and keeps the touch for more than 1 secondSwipe is

Before the opening, let's talk about a class, because we will use You can use. container to wrap the content on the page to align the center. Width is set for iner to match the grid system. Some people may not know what the "different media query

One effect: Html code:Copy codeThe Code is as follows: click an image to produce results Plug-in code:Copy codeThe Code is as follows:; (Function ($ ){Var defaults = {Ani: 4, // animation effect. 1. Mosaic to the middle, 2. Mosaic to the upper

In jquery 1.8.x, the following operations are performed to select or unselect the checkbox: Check whether selected Copy codeThe Code is as follows:$ ('# Checkbox'). prop ('checked ') Set the selected or unselected status: Copy codeThe Code is as

Use the FileUploadField plug-in of Extjs to upload files. Because FileUploadField is the extension plug-in of ext, the method cannot be found in its api. This file is in the ux In the examples folder of extjs, therefore, FileUploadField must be

The simplest progress bar implemented with jQuery has less than 10 lines of code. The style can be ignored directly. (Find an image by yourself) [CSS] CodeCopy codeThe Code is as follows:$ (Function (){Var I = 0;(Function progressBar (){I = I + 1;If

The nesting of scopes will form a scope chain, and the nesting of functions will form a closure. Closure and scope chain are an important feature that distinguishes JavaScript from other languages. ScopeJavaScript has two scopes: function scope and

1. jquery:Copy codeThe Code is as follows:$ ("Html"). die (). live ("keydown", function (event ){If (event. keyCode = 13 ){// Add the logic to be processed here}});// Bind the carriage return action$ ('Textarea [name = chattext] '). keydown

For front-end students, web page layout is the basic skill, and it is not a qualified web page reconstruction engineer without page layout. In our daily work, the most commonly used layout method is fixed-width layout. Anyway, the companies I have

To achieve this basic requirement, there is a lot of data on the page, you can delete one or more items, determine whether to select at least one before deletion, otherwise the prompt is displayed.Copy codeThe Code is as follows:Function deleteUser (

Zookeeper Concept: All attributes can be accessed anywhere in the program, that is, global variables. In JavaScript, window is a global object, while the global Object of Node. js is global,All global variables are attributes of the global object,

Share a piece of code that uses JavaScript to implement the copy function, compatible with multiple browsers, compatible with IE and Firefox browsers. JavaScript copy function code, compatible with multiple browsers Texture address:

It is not difficult to use JS to calculate the location of the mouse on the page, but because IE and Firefox have different methods for obtaining the current location of the mouse (IE is the event. x | y, FF is event. pageX | Y). Generally, event is