JavaScript

These have been studied before, but the work has not touched the front end for a long time, so re-review.  $ output a message in the console Consoleconsole.log (); Console.error (); Console.warn (); Console.info ();  $ Commonly used string

First, knowledgeAppendChild (): First delete, in sortSort (): array sortparseint (): string = = = Integer (number)！！！ -HTML"ID name Age Operations 2 Zhang San 236 Wangsi 241Blue275 Zhang Wei 243 John Doe 284 Harry 25！！！ JsWindow.onload=function (){

First, Console.log and debugger debugging methodsBoth of these methods make our general favorite debugging methodOnce this line of code is executed, Chrome stops automatically at execution time.You can even use conditional statements to make

javascript--Closure Package

Package　　Encapsulation is the abstraction of data and the operation of the data is packaged together, the data is protected in the internal,Other parts of the program can operate on the data only through authorized operations (member methods).The JS

1.JavaScript functionA function is an event-driven or reusable block of code that executes when it is invoked.1.1 JavaScript function syntaxA function is a block of code wrapped in curly braces, preceded by a keyword function:function functionname ()

1. Object literal creationvar person={name:' aaa ', Age:2. Constructor Creationfunction Person (name,age) {this. name=name; this. age= age; this. say=function() {alert (' hello ' +this. Name)}}var p= New Person (' AA ', +) P.say ()3. Use the

JavaScript is compatible with major browsers to block bubbling events function Stopevent (event) {//block bubbling Event//Cancel event bubbling var e = arguments.callee.caller.arguments[0] | | event;//If this sentence is omitted, the

1. VariablesVariables are defined using the var operator, VAR message, which defines a message variable that can be used to hold any type of variable. The uninitialized variable value is undifided;If no variable is defined by Var, then it is

Classes and constructorsUse constructors to define classes in JS:function Range(from, to) { this.from = from this.to = to}Range.prototype.includes = function(x) { return this,from The code above declares a range constructor, generates a

After delving into the language of JS, we discover that it has many well-known difficulties (e.g. closures, prototype chains, memory spaces, etc.). Some are due to the design flaws of JS, while others are the advantages of JS. No matter how, always

1. Have you tried to sort the array elements? JavaScript is sorted by default using the dictionary order (alphanumeric). Therefore, [1,2,5,10].sort () results are [1, 2, 5] .If you want the right sort, you should do this: [1,2,5,10].sort ((A, B) +-a)

This article reprinted: Nanyi JavaScript closure closure The scope of a variableTo understand closures, you must first understand the special variable scope of JavaScript.The scope of a variable is nothing more than two kinds: global variables

LigerUI --- ListBox (list box movable instance ), Preface: Ligerui also encapsulates a removable list box, which can be used directly according to the demo. However, it is static initialization data directly on the page. How can this problem be

Html summary, html Time: December 3, 2017 19:35:18 Used: This article is used for personal technical summary. Html notes1. html tags are case-insensitive, but lower case is recommended.2. LabelsAvailable in head section:... // webpage title //

Recent front-end FAQs  I have read a lot of front-end questions recently, and many Daniel has also sorted out the questions. This article is just a blessing. In general, almost every question is similar, and the focus may be different for companies

Meta http-equiv attribute details, metahttp-equivMeta http-equiv attribute details (reference link: http://www.w3school.com.cn/tags/tag_meta.asp) http-equiv, as the name suggests, is equivalent to the role of an http File Header, it can return some

Vue-Router to implement inter-component jump. You can use VueRouter to redirect between components for your reference. The specific content is as follows: Three methods are provided to achieve redirection: ① Directly modify the route address in the

Detailed description of SPA single page application in vue, vuespa I. SPA Overview SPA (single page application) single page application, in a completed application or site, there is only one complete html page, this page has a container, you can

Summary of the New Method Instance of array in ES6, es6array This example describes how to add an array in es6. We will share this with you for your reference. The details are as follows: ● Find: Let arr = [234, 'sdf ',-2]; arr. find (function (x)