JavaScript

3.4 Data typesECMAScript has 5 simple data types, also known as basic data types, Undefined, Null, Boolean, number, and string, as well as a complex data type--object.3.4.1 typeof operatortypeof is used to detect the data type of a given variable,

Front-end Development specification series of JavaScript tips and Tricks, intended to be written commonly used code collection, commonly used techniques to organize articles, feel "common code Daquan" Too Earth, "practical code collation" is biased,

While looking at the advanced JavaScript tutorials for a while ago, I found a lot of basic JavaScript concepts that I didn't understand.Online Search, see everyone on the "Basic JavaScript Tutorial (8th Edition)" good evaluation, bought a copy . (US)

Note: Original address http://blog.csdn.net/oscar999/article/details/8671546I am here to imitate the study!1, the array of JS loop traversalThe traversal of the ① array is the first thought of the for () Loop statementvar arr = [' Summer ', ' I ', '

Today in the writing of a small program, the use of the text box to capture the return key function, I would like to be able to use JavaScript implementation, so Baidu has the following, to get the following implementation.The HTML page is as

Scopes are one of the most important concepts of JavaScript, and to learn JavaScript you need to understand how JavaScript scopes and scope chains work. Today's article provides a simple introduction to JavaScript scopes and scope chains, hoping to

We recommend that you create 10 jQuery plug-ins and 10 jquery plug-ins. This article summarizes 10 suggestions to help you create a better jQuery plug-in. Share it with you for your reference. The details are as follows: After many jQuery plug-ins

Node. js learning summary on mongodb operations, node. jsmongodb I. Preparations 1. Create a table to be read in mongodb Create a database named TestCopy codeThe Code is as follows:Use extension test;Insert data to the user tableCopy codeThe Code is

Jquery Form Verification plug-in (jquery. validate. js), jqueryvalidate plug-in Jquery verification is very simple. Below are three common methods: Method 1: it is also a standard method: First introduce the jquery plug-in and the jquery validation

Front-end specification 1-HTML specification, specification 1-HTML SpecificationHTML Specification1. Code style (parameter 1 ,)Use Tab characters (four spaces in length). When there are too many hierarchies, try to write them in one line, but make

NodeJs basic syntax and type, nodejs basic syntax Preface Today, I want to check the knowledge about Node types. I want to summarize it and see an article on Googol, but the original link is gone. I will pull this article out of the snapshot, if the

JavaScript plugin development tutorial (2): javascript plugin I. Opening Analysis Hi everyone! Remember the previous article ------ the beginning of this series (JavaScript plug-in development tutorial 1 ). This article mainly describes how to

Jquery jelly jitter implementation method and jquery jelly jitter implementation This article describes how to implement the jitter Effect of jquery jelly. Share it with you for your reference. The specific implementation method is as follows: Copy

How to Use socket. io and nodesocket. io in node express Server. js Code Copy codeThe Code is as follows:Var express = require ("express ");Var http = require ("http ");Var sio = require ("socket. io ");Var app = express ();Var server = http.

Node socket. io event Usage Details, nodesocket. io The socket. io class library can not only send messages to each other, but also send events to each other through the emit method of the socket port object. In the previous event, emit said that it

Javascript simulated acceleration and deceleration code sharing, javascript deceleration Acceleration means that an object is moving faster and faster. Deceleration means that an object is moving slowly. Now we use Javascript to simulate these two

9 models 2014 Most Popular jQuery practical special effects recommendation, 9 models 2014 Most Popular jquery 1. jQuery cxSlide implements three multi-function atmospheric focus image carousel JQuery cxSlide implements three multi-functional source

Css draws a computer keyboard and css draws a keyboard css keyboard painting http://www.999jiujiu.com/ Esc F1 F2 F3 F4 F5 F6 F7 F8 F9 F10 F11 F12 PrtSc SysRq Scroll Lock Pause Break ~ ' ! 1 @

Use AngularJS to compile a more elegant JavaScript code guide, angularjs Download the sample code in this article: modulePattern.zip-all four HTML files and panacea. js-1.6 KB Introduction AngularJS library contains many things, but I only want to

Basic Javascript knowledge in Jquery source code (4)-jQuery. fn. init method, jquery. fn. init $ () Indicates that the jQuery. fn. init method is called. jQuery = function( selector, context ) { return new jQuery.fn.init( selector, context,