JavaScript

1. Simple prototype chain: var song= function () {THIS.A = 5;this.b=6;}//function Song () {this.a=5;}song.prototype={Add:function (A, b) {return a+b+this.a+this.b;},Jian:function (A, b) {return b-a;}}var jum= function () {This.name=

Variable declaration "was advanced"The syntax of JavaScript is similar to C, Java, C #, and is collectively referred to as Class C syntax. Students with C or Java programming experience should be familiar with the "declare first, later use" rule,

① defining functions using function declaration syntax1 function sum (num1,num2) {2 return num1+num2; 3 }② defining functions using function expressions1 var sum=function(num1,num2) {2 return num1+num2; 3 }③ defining functions using function

11th Chapter DOM Extension1. Selector APIThe core of Selector API Level 1 is two methods: Queryselector () and Queryselectorall (). In a compatible browser, they can be called through an instance of the document and element type. Currently fully

In computer science, closures (Closure) are short for lexical closures (Lexical Closure) and are functions that reference free variables. This quoted free variable will exist with this function, even if it has left the environment in which it was

I have a project in hand to meet a problem: The original project developers in JavaScript, a lot of stitching HTML, resulting in the code is extremely ugly, extremely difficult to maintain. How can they put up with such ugly, clumsy code, or perhaps

javascript parseint function , everybody knows what it is. but you know what parseint ("07") returns? parseint ("08") and return how much? The correct answer is parseint ("07") returns 8 parseint ("08") returns 0 you know where the problem

Chapter II: Basic KnowledgeI, Velocity and jquery:The velocity function is independent of jquery, but can be used in combination. The advantage of doing this often is that you can use jquery's chained operations: Once you have selected an element

dom Basic dom type node type:node.firstchild=node.childnodes[0], first child node NODE.LASTCHILD=NODE.CHILDNODES[NODE.CHILDNODES.LENGTH-1] Last child node node.ownerdocument, returns the Document object documentnode.nextsibling, next brother node

There are two values in JavaScript that denote "null", respectively, undefined and null;　　(1) Undefined　　Defines a global variable whose value is undefined that this variable is also called undefined . But this variable is not a constant, nor is it

CSS3 scroll bar-webkit-scrollbar, css3 Webkit now supports the area with the overflow attribute, the list box, the drop-down menu, and the custom style of the textarea scroll bar. If you want to skip the introduction and view the demo directly,

label definition and usage, doctype label the declaration is not an HTML Tag; it indicates the web browser's instructions on which HTML version the page is written. In HTML 4.01, declare to reference DTD because HTML 4.01 is based on SGML. The DTD

Javascript html5 mobile terminals can easily upload files, and html5 can easily implement Most of the files uploaded on the PC end are plug-ins, and it does not matter if flash is introduced. However, if the Mobile End still uses a variety of

Javascript obtains the internal fields of wx. config for sharing. wx. config for sharing. BackgroundWhen sharing development, our general process is GetSignPackage ();?> share The above is a PHP file. A major drawback of such code is

The Bootstrap solution cannot be used in the bootstrap pop-up box. Problem description The front-end framework bootstrap is used in the write project, which provides powerful functions! Bootstrap Learning However, when the pop-up box component

Js: implement the effect of the previous page. [Code]: js Previous Page. Javascript returns the previous page: 1. history. go (-1), return two pages: history. go (-2 ); 2. history. back (). 3. window. history. forward () returns the next page 4.

Detailed description of practical methods for creating objects and inheriting objects using javascript, and detailed description of javascript This article stipulates that attributes refer to attributes or methods without special

JS implements the method of setting the absolute position of ff and ie elements, jsff This article describes how to set the absolute position of ff and ie elements in JS. We will share this with you for your reference. The details are as follows:

AngularJS deeply learns how to use commands in the angularjs framework of JavaScript. Directive is the most important part of all AngularJS applications. Although AngularJS already provides a rich set of commands, you often need to create

Use jQuery or native js to scroll and load new page data. I believe many people have seen waterfall Stream Image la S. These images are dynamically loaded and the results are very good, and the pressure on servers is relatively low, I believe you