JavaScript

In the front-end design of the site, through the keyboard to control changes in page status, such as Up,down,pageup,pagedown and so on to the Web site scrolling. At present, the development of HTML5 brings a new game experience, so key operation is

1.1 if inch window)) {2 var a = 1; 3 }4 alert (a);Read the Code: If window does not contain property A, declare a variable A, then assign a value of 1, and the value of the variable is finally popped.Understand the code: JavaScript does not have

JS in the prototype is a more difficult to understand the part of JSThis article is based on several knowledge points:1 prototype design patternClone () can be used in. NET to implement the prototype methodThe main idea of the prototype method is

jquery $ (document). Ready () is similar to the Window.onload method in traditional JavaScript, but differs from the window.onload approach. 1. Execution Timewindow.onload must wait until all the elements of the page that include the picture have

JavaScript tends to block some of the browser's processing processes, such as HTTP requests and interface refreshes, which are the most noticeable performance issues facing developers. Keeping JavaScript files short and limiting the number of HTTP

The JavaScript language is an excellent scripting language. This includes the flexibility of scripting languages and features of many high-level languages. For example, to build and instantiate an object, the garbage collection mechanism (Gc:garbage

In a programming language, the importance of Boolean operators is comparable to equal operators. If you do not have the ability to test two value relationships, statements such as if...else and loops will be useless. In the weak type language like

As a novice to native JavaScript, the learning of some widgets can consolidate knowledge and improve business efficiency;Get the Element class:var get={};Get.$=function (ID) {return getElementById (ID);},Get.$$=function (Oparent,sclass) {var

What is Raphael? Raphael is a Javascript library for drawing vector graphics in Web pages. It uses the SVG recommendation Standard and VML as the basis for creating graphics, you can easily create a variety of complex bars, pie charts, graphs and

In JavaScript, time processing is often needed. Recently want to slowly build their own code base, sorting out a few of the previously used JS processing time functions, sent to share with you, later in the use will continue to add and modify the

JavaScript gets the start position, end position, and selected text of the selected text in textarea .DemoHtml>javascript get textarea inThe start position of the selected text,End Position andSelected text JavaScript gets the start position, end

Why BIND is required var name = " the window " var object = {name: " my Object " , Getnamefunc:function () { return F Unction () { return this .name; }}};alert ( object . Getnamefunc () ()); // Object.getnamefunc () returns an

StatementFor statement For the initialization expression in the For statement, both the control expression and the post-loop expression are optional and the three expressions are omitted, creating a wireless loop. There is no

Js formatting time summary and js formatting Summary I don't want to talk about it. I 'd like to post various formatting methods to you first. Copy codeThe Code is as follows:Var myDate = new Date (); MyDate. getYear (); // obtain the current year (2

Android: linkage between provincial, municipal, and county levels (based on json and spring) 1. See ": Ii. program code: 1. MainActivity. java Package com. loveplusplus. loader. demo. ui;Import org. json. JSONArray;Import org. json.

Differences and usage of eq and get operations on jquery objects in jQuery -- a powerful tool for foreground display operations : The eq () selector selects an element with the specified index value. The index value starts from 0, and the index

Use JS to implement jQuery's addClass, removeClass, hasClass function, jqueryaddclass Let's just talk about the code. Copy codeThe Code is as follows:Function addClass (obj, cls ){Var obj_class = obj. className, // obtain the class content.Blank =

Java programmer's JavaScript learning notes (8 -- jQuery selector) We plan to complete this note in the following order:1. concept.2. Copy and inherit attributes.3. this/call/apply.4. Closure/getter/setter.5. prototype.6. object-oriented simulation.7

Seo query command, seo command The following content is from the network. Which of the following is better?1, 5, 6, 11, 12, 13Entries 1.Site command: Query the indexing status of a specific website. For example, you can query the 6676 game recording

Javascript array sorting and javascript sorting If you have been using javascript for a while, you must know that the array sorting function sort is a method in the array prototype, that is, array. prototype. sort (), sort (compareFunction), where