JavaScript

SetAttribute are supported by various browsers, but in IE7 the following versions, some attribute values are still different, such asObj.setattribute ("Class", "ClassName")In IE8 and other mainstream browser can be effective, but in IE7 the

Chapter 2 values and variables1. Value valuesThe only thing a computer can do is to process data.All the data processed by the computer, whether digital, text, or pictures, audio and video, eventually run in the hardware in the form of bit,

1. Basic data type:String, Decimal, Integer, DateTime, Boolean, and so on.2. type conversion:It is divided into automatic conversion and casting, which is generally used for casting. Other types are converted to integers: parseint ();Other types

REGEXP is a built-in object in JavaScript. is a regular expression.Regexp.$1 is a property of RegExp that refers to the first sub-match (in parentheses) string that matches the regular expression.And so on, regexp.$2,regexp.$3, ... Regexp.$99 can

In order to and 10 years ago in the old project technically and logically completely, can be modular JS way and the old project to connect;//The relevant JS of the competition vehicle system//JS ModulevarJingpinmain = { //Number of drop-down

Requirement Description: Make a display of the year, month, day, weekday and show The Morning (AM) and PM (PM)12 binary clock, the specific effect is as follows:The code is as follows:DOCTYPE HTML PUBLIC "-//w3c//dtd HTML 4.01 transitional//en"

This document is a list of best practices and preferred scenarios for developing JavaScript code based on the views and experiences of many developers in the JavaScript community. Because this is a recommended table rather than a principled solution,

Static code inspection is an indispensable part of development work, after all, for the programmatic work of the eyes of the person is not reliable, let alone the eyes to see their own code. Even if the final run result is passed, there may be

The array class can be defined as follows:var avalues = new Array ();If you know the length of the array beforehand, you can pass the length with the parametervar avalues = new Array (20);------------------the following 2 ways to define the same-----

Define map function Map () {this.container = {};} Put Key-value into Map Map.prototype.put = function (key, value) {try {if (key! = NULL && Key! = "") this.container[ Key] = value;} catch (e) {return e;}};/ /Remove the corresponding value from the

    untitled         //common.js      window.onload=function () {   var d  = document.getelementbyid (' wz ');//Get div node object by ID  var   now = new date () ; Var hour = now.gethours ();   var s=new array ();   s[0] =   "Night";  s[1] = 

DOCTYPE HTML>HTML> Head> MetaCharSet= "UTF-8"> title>title> styletype= "Text/css">. Imgbox{width:100%;Height:400px;position:relative;Top:20px; Left:15px; }img{Opacity:0;position:Absolute;Max-height:400px;Max-width:3

1. Prototype inheritance　　Object-oriented programming can be implemented in many ways. Other languages, such as Java, are implemented using class-based models: Classes and object instances are treated differently. But in JavaScript there is no

When it comes to the branching structure in JavaScript, we have to mention the word Process control, and all of our programs are made up of data and algorithms.program = data + algorithmUsually we call the algorithm can be done by "order", "branch",

JavaScript data type base data type Boolean Null Number String Symbol Undefined Object data Type objects Build-in Object Array Date Regexp More ... Array Definition:

After reading some rem knowledge points, I will make a self-Summary here, and summarize the rem knowledge points. The most common font units are PX and EM. First, px: Pixel (Pixel ). The unit of relative length. Pixel px is relative to the screen

Response-type mobile website highlights and response-type mobile phone highlights Many browsers in CSS3 are incompatible. You need to add a prefix Based on the browser kernel:Firefox-moz-Google and apple-webkit-Ie9 and later versions-ms-Openg-o-In

Js dynamically obtains the sub-complex option and designs the implementation method of full selection and submission. js Selects all options. When creating a project, you will encounter a problem of dynamically obtaining sub-options based on the

Js: compile a simple code for product amplification, and js Code for amplification. A product display area is often displayed on the product page of a shopping website. A function of this graphic area is to enlarge the product image. You can move

A comprehensive understanding of the javascript ternary operators and a comprehensive understanding of javascript Ternary operators: For example, the name represents three operands. Is the syntax a condition? Result 1: result 2. Here you write