JavaScript

Like what: Copy Code code as follows: var anchors = document.getElementsByTagName ("a"); for (i = 0; i var ele=anchors[i];//takes an element Some code here } The above code represents getting all the link elements in

It's really five quick tips: use submit events only on elements If you want to bind an event handler in a form, you should only bind the submit event on the element, rather than the Submit button for the Click event. March: That's a good way to

In the use of JavaScript, Dom operation is the most common, with the development of Web front-end technology, we are more and more use JS to manipulate the DOM elements, such as through Ajax request to get the data, and then update the elements on

Read again Andrew's original text, in the comments below the original text, impressively found that some people have raised the question of the number of parameters, the same lazy pig direct copy of the original comment reply, but also found that

Original EnglishCreateadder (x) is a function, that returns a function. In JavaScript, functions are first-class objects:they can is passed to other functions as arguments and returned from fun Ctions as. In this case, the function returned are

Play instructions: up and down control movement, empty rounds. Each hit an enemy aircraft plus 100 points, each upgrade 5000 points, the player's aircraft a number of rounds to add one, up to four, was hit by an enemy plane or let the enemy aircraft

Copy Code code as follows: /** 2 * Retrieve array elements (prototype extension or overload) 3 * @param The value of the element retrieved by {o} 4 * @type int 5 * @returns Element index 6 */ 7 Array.prototype.contains = function (o) { 8

The long-term value of software derives directly from its coding quality. Throughout its lifecycle, a program may be read or modified by many people. If a program can clearly show its structure and features, it can reduce the likelihood of errors in

Copy Code code as follows: Non-IE browser call function will automatically return parameter event, through which you can get keyboard Copy Code code as follows: Function Hotkey (e) { //Judge

Let's take a look at an example: Copy Code code as follows: var Class = { Create:function () { return function () { This.initialize.apply (this, arguments); } } } var A = Class.create (); A.prototype = {

One, Myth! The confusion caused by a piece of codePlease see the following code: Copy Code code as follows: for (Var i=0;iConsole.log (j+ "," +k); for (Var j=0;jvar k = j+1; } } Console.log (i); Output

Copy Code code as follows: Function F1 () { var n = 999; Nadd = function () {n + = 1;} function F2 () { alert (n); } return F2; } The closure here is F1, enclosing a variable n and a function F2. Let's just ignore

After sharing the gadget of http://jscompress.sinaapp.com/yesterday, we found that we still loved it. So today I'm going to json it. Use JSON to transfer data and also open APIs All function implementations of this tool are handled by HTTP:

Below is a class that I write myself, with fields in the class, methods Copy Code code as follows: Constructors function Person (name,sex,age) { THIS.name = name; This.sex = sex; This.age = age; };

Copy Code code as follows: Inspiration from Http://www.cnblogs.com/jkisjk/archive/2011/01/28/array_quickly_sortby.html var hasduplicate = false; var sortby = function (nodes) { var result = [], array = [], n = nodes.length, i = n,

However, to implement some specific features, you can choose a more dedicated lightweight library, today's article to share with you 16 very useful JavaScript libraries. Blackbird:open Source JavaScript Logging UtilityBlackbird is a very cool

These two days to try to write a ajaxtoolkit:asyncfileupload demo, it has a Onclientuploadcomplete attribute can associate client JS, so you can write onclientuploadcomplete= " Uploadcomplete, and then define the Uploadcomplete method: Copy

"Nested Functions"JavaScript allows embedded functions that allow functions to be used as data, and under the function lexical scope, can produce amazing places that differ from traditional object-oriented languages. First, the function of

Problems with no parameter class inheritance Let's take a look at a sample code to realize B inherits from a: Copy Code code as follows: function A () { } a.prototype.a1 = function () { }; function B () { }

I. SummaryThis series of articles is designed to abstract generic, Cross-browser scripting methods. This article explains the JavaScript functions that pop up floating layers, as well as the principle and usage considerations of functions. Two.