JavaScript

There are many ways to repeat arrays in JavaScript, and here's a summary of several common implementations.1 /* Implement one:based on prototype extension*/2Array.prototype.removeDuplicate =function() {3 varArrobj = {},4NEWARR = [],5Len = This.

function time () {var date = new Date ();//Get system times var year = Date.getfullyear ();//Current A.D. var month = Date.getmonth ();//Current Month- 1, so the year shown later has +1var day = Date.getdate (); The current number of days, GetDay ()

/** smart-Machine Browser version info: **/var browser = {versions:function () {var u = Naviga Tor.useragent, app = Navigator.appversion; return {//Mobile terminal browser version information Trident:u.indexof (' Trident ') >-1,//ie kernel

Let's start with a function.functionfn1 (name, age) { This. Name =name; This. Age =Age ; This. Say =function() {alert (' My name: ' + This. Name + ' and age: ' + This. Age); }}fn1.prototype.test=function() {alert (' Test ');}varF1 =NewFN1 (' JM ',

Scopes and closures in JavaScriptA lot of people are talking about their understanding of closures, and some of my understanding of closure is very helpful, some I read or did not understand, the following is my own learning now on the scope and

Get class :1) Dynamic Method:charAt : Gets the character at the specified position of the string. (parameter: one that specifies the character position to get)1, negative numbers are not accepted, and if negative, an empty string is returned.2, if

Lexical analysis, in order to analyze 3 samples:1th step: Analyze the parameters first2nd Step: Re-analysis of variable declarations3rd Step: Re-analysis function declarationA local variable that can be used by a function is analyzed from 3 steps

Data types for JavaScriptCharacter type, number, Boolean, array, object, Null, UndefinedDefinition of the array:var cars=new Array ();Cars[0]= "Audi";Cras[1]= "BMW";Cars[3]= "Benze";Or:var cars = new Array ("Audi", "BMW", "Benze");Or:var cars

Meta tag usage summary, meta tag usage  MetaTags are used to describe the attributes of an HTML webpage document. For example, the author of the webpage, date, keyword of the webpage, refresh, and page level setting are the most basic metadata in

JavaScript implements the method of passing parameters to setTimeout code The setTimeout function is the most critical function in javascript to achieve dynamic results. However, when I wrote the code yesterday, I found that when the first

Example analysis of the encode64 encryption algorithm implemented by JavaScript and encode64 instance analysis This example describes the encode64 encryption algorithm implemented by JavaScript. Share it with you for your reference. The details are

JS Extension Method Instance Analysis The JS extension method is very similar to the C # extension method and can also be called in a chain. It is also implemented through the extension of a class. This is very useful. If you put the pre-written

How does jQuery monitor text box events and handle them accordingly? This document describes how to monitor and handle text box events using jQuery. Share it with you for your reference. The details are as follows: 1 2 3 4 5 6 7 8 9 10

Meanings of various attributes in CSS3, CSS3 attributes Box-shadow: shadow offset value (positive and negative values are recommended); shadow vertical offset value (positive and negative values are recommended); shadow blur value; shadow color

The path to JavaScript (2) -- variables and basic data typesPreface variables in JavaScript are loose types. The so-called loose type means that any type of values can be saved when a variable is declared, unlike SQL statements that declare a key

JQuery implements the online Q & A function and jquery implements Q &. Sometimes you need to add an online test function to a webpage, such as online surveys and online testing of various knowledge applications. Such applications require a lot of

Online Q & A functions implemented by jQuery Sometimes you need to add an online test function to a webpage, such as online surveys and online testing of various knowledge applications. Such applications require a lot of front-end and back-end

Javascript uses DOM operations to implement simple message boards, and jsdom operations on message boards This article describes how JavaScript uses DOM operations to implement simple message boards. Share it with you for your reference. The

How js achieves multiple different motion effects on the same page Key Aspect 1: 1 2 3 4 5 6 7 Function getstyle (obj, name ){ If (obj. currentStyle ){ Return obj. currentStyle [name]; } Else { Return getComputedStyle (obj,

JavaScript developer: The Win10 Sparta browser is awesome. T's home news on October April 9, although the Win10 Sparta browser and the Public met soon, but its "beauty" has been increasingly broadcast. Especially in the JavaScript developer circle,