JavaScript

The principle is: the general use of traversal method to determine whether each radio is selected, if it is, and then take its value. 1 2 "3 Note that the above needs to be aware that the ID (userlist) is set in the form Here are

There are no events (such as Click,mouseover) in the 1,IE6/7/8/9, and Firefox/safari/chrome/opera. Copy Code code as follows: 1 2 Example: 12 2, click Option to get the event source target via srcelement

The examples in this article describe the method by which the JavaScript implementation makes the relevant input box dimmed when the check box is selected. Share to everyone for your reference. as follows: This feature is often seen on some

First of all, review the next article high-performance JavaScript DOM programming , mainly two point optimization, one is to minimize access to the DOM, while the operation on the ECMAScript side, the second is to cache local variables, such as

No more nonsense, first effect chart: View Demo Source Download Code in JavaScript var spans=document.getelementsbytagname ("span"); var flag=5;//this value arbitrarily take, as long as not 01234 on line var expand=function () {//Extension

Create an array There are several ways to declare an array in JS: var arr = []; Shorthand mode var arr = new Array ();//new Array object var arr = new Array (arraylength);//new Array object of a certain length To illustrate the

On the web side, there is usually no right-click menu, and each browser has its own right-click menu. But for some special pages, it is necessary to right-click menu to increase the user experience, such as Baidu Music, QQ mailbox, I believe that

Do you often listen to senior or some front-end predecessors said that can not use CSS wildcard *,CSS selector cascade can not be more than three layers, CSS as far as possible using class selector, writing HTML less use table, the structure should

Copy Code code as follows: var Odatef = new Date (); Odatef.setfullyear (2012); Odatef.setmonth (5) Odatef.setdate (1); Fday = Ordatef.getday (); If today is May 30, through the above code, I should be getting to the next

Write casually! Idle, bored! If the code has bugs, you are welcome to make a strong shot of bricks! JS CODE Copy Code code as follows: HTML CODE Copy Code code as follows: date demo

A simple picture amplification effect: Parameter description: 1.berviary:string, need to be magnified picture ID 2.expand:object, enlarge the area, if this key is not set or the ID of this item is not set, the default is cursor follow mode, and the

1, how to create hyperlinks in Javasript 2, apply to the tree control event handling in Ext Tree_03.js Copy Code code as follows: Ext.onready (function () { var root = new Ext.tree.TreeNode ({//tree, there is no function, using

var patterns = { Hyphen:/(-[a-z])/I, Root_tag:/^body|html$/i }; var Tocamel = function (property) { If there is no-[a-z] letter, return directly if (!patterns. Hyphen.test (property)) { return property; } If there is a cache, return the

We will overwrite the factory pattern with the constructor pattern. Copy Code code as follows: function Employee (name, age, Job) { THIS.name = name; This.age = age; This.job = job; This.sayname = function () { alert

Today is the last section, which describes not using constructors to implement inheritance. One, what is the "non-constructor" inheritance?For example, now there is an object called "Chinese". Copy Code code as follows: var Chinese =

Copy Code code as follows: var jsobject = {} | | New Object (); Jsobject.extend = function (subclass, superclass) { First, determine if the subclass subclass is already defined, or redefine the class if it is undefined. if (typeof subclass =

A little question today: how do I get the return value of a JavaScript asynchronous function? 1. Wrong attempt My initial attempt when I did not enter: 2. Callback function The pop-up is not 4, but 0, and then know that this is an

Local variable TrapsLook at the code first: function foo () { var a = "Hello" b = "World" return a + B; } When this function is finished, it returns HelloWorld, and the result is really no problem. But there's a

If you have focus, you must lose Focus. The onblur event and onfocus are relative events when the cursor leaves the current get polyThe onblur event is triggered while the calling program is Executed.The following code, the page has a user and

Web Print summary, web Summary One requirement in the project is to print the winform client on the webpage by the customer. The printing requirement is implemented according to a certain format. The solution at that time was to use PDF printing: 1.