JavaScript

JavaScript data TypesThere are six main categories of JavaScript data types:Undefined, NULL, string, number, object, Boolean1.Undefined ---Declare a variable with VAR but not initialized,Using the typeof operator on an uninitialized variable or a

function Chang (str, len) {function Lenstat (str) {function Ischinese (str) {///judgment Yes Not chinese var reCh =/[u00-uff]/; return!rech.test (str); } var strlen = 0; The initial definition length is 0 var

This article mainly introduces some of the techniques used in function (the previous article), using function features can write a lot of very interesting code, this article mainly includes: callback mode, configuration object, return function,

Introduction to constructors everyone is familiar, but if you are a novice, it is necessary to understand what is called a constructor. Constructors are used to create objects of a particular type-not only the objects that are used, but also

Ember.js V2.9.0-beta.2 Released, Ember is an ambitious Web application (Tengyun technology ty300.com) that eliminates the boilerplate and provides a standard application architecture for the JavaScript Framework (Basic tutorial Qkxue.net). This

The job title is as follows:----------------------------------------------------------------The methods of string interception are slice (start,end+1), substring (start,end+1), substr (Start,n). There are some similarities or differences between

Enterprise Q: Talk about the development of the project when different browser different points, how did you solve?Different browsers do not support DOM in the same wayGet the trigger event for that element in the Web page: Use srcelement in IE, use

This article ish5eduAgency officialHTML5 Training HTML5 Trainingtutorials, the main introduction:JavaScript Intensive Tutorials--jquery Callback function the Callback function executes after the current animation 100% is complete.  problems with

Basic data type:Strings: StringNumbers: NumberBoolean value: Boolean True/fasleSpecial data types:Empty object: nullNot defined: UndefinedComposite data type:Objects: ObjectArrays: ArrayOne, String typeThe string type is used to represent a sequence

JavaScript variables, values, and object descriptionsThe understanding of variables, values, and objects in Javascript. In order to simplify the understanding, the first half of the shaving is temporarily related to the execution Context. In

Use of filters and custom instance code in AngularJS, and angularjs Filters Preface I believe everyone knows how to use filters: one is to use filters in html, and the other is to use filters in js Code. Next we will learn more through

AngularJS implements two tabs: angularjs 1. Use common commands to implement tabs label 1 label 2 content of tag 1 content of tag 2 description here we demonstrate how to implement it directly through bootstrap.. You can also use

How to Use ionic to block the input box when developing ios system (Keyboard pop-up problem), ionicios When developing IOS systems using ionic, there will be an annoyance. when filling out the form, the keyboard will block the input box, which is

String split (), string split Knowledge: The split () method splits the string into a string array and returns this array. Syntax: StringObject. split (separator, limit) Parameter description:   Note:If an empty string ("") is used as a

Ionic hiding tabs method, ionic hiding tabs Method This article shares with you the ionic hidden tabs Method for your reference. The specific content is as follows: 1. 2.Add. directive under the controller: var module =

Javascript checks whether simple instances (recommended) and JS instances are opened in the browser Recently I have made many HTML5 projects, and many pages will be shared through SNS such as Weibo. Download the company APP on the sharing page.

Examples of indexOf () and lastIndexOf application methods in Javascript, indexoflastindexof IndexOf () method indexOf() Returns the position of the first occurrence of a specified string value. Note:indexOf() The method is case sensitive! Note: If

Using jsonp to call Baidu js across domains to implement smart prompts in the search box, jsonpjs Search is often used in projects, especially for navigation websites. It is unrealistic to search keywords by yourself. Directly calling Baidu is the

Deep understanding (function () {...}) (); and deep understanding of function 1. It is called an anonymous function that runs immediately (also called an immediate function) 2. When an anonymous function is enclosed and a bracket is added to it,

Using Javascript to implement BMI calculator, javascriptbmi Preface BMI Index (Body Mass Index in English) is a commonly used international standard for measuring the degree of obesity and health, when we need to compare and analyze the health