JavaScript

Tsinghua University published the " The first chapter of JavaScript introduction 1. Enter a JavaScript statement in the address bar Javascript:Document.write ("Show text") 2. Embed JavaScript in an HTML document Chapter II using Variables and

The simplest str.length can be, examples var str = "465464656464566"; var strlength = str.length; Example 2, JS statistics string in the number of characters, 1 in Chinese 2 characters example: or regular function getstrlength (str)  {       var 

Put the variables in the higher level function back, and so on until the global object. When the function needs to query the value of a variable, JS interpreter will go to the scope of the chain to find, from the first local variables to find, if

String.Replace () Introduction Grammar: String.Replace (RegExp, replacement) RegExp: The regular expression for which you want to perform the substitution operation. If a string is passed in, it is treated as a normal character, and only one

JSON is a subset of JavaScript object-oriented syntax. Because JSON is a subset of JavaScript, it can be used clearly in this language. The text generates a JSON object that must be enclosed with a pair of parentheses. Because JSON is a subset of

JavaScript feature detection is not browser detectionDetailed source reference:. net/article/21834.htm ">http://www.111cn.net/article/21834.htmAt first, the front-end engineers objected to browser testing, which they thought was bad because it was

At the same time, we know that in object-oriented high-level languages, creating objects that contain private members is one of the most basic features, providing properties and methods to access private members to hide internal details. Although JS

JavaScript gets the current timestamp:The first method: Copy Code code as follows: var timestamp = date.parse (new Date ()); Results: 1280977330000 The second method: Copy Code code as follows: var timestamp =

The first more important concept about JavaScript is the variable, and the working mechanism of the variable is the basic feature of JavaScript. In fact, a variable is one of the identifiers. This article describes the variables and identifiers in

Conditional compilation of jscript/javascript in IE Author: JavaScript Kit Translator: Zou (Sheneyan) Translation Date: 2006-02-12 English Original: Conditional compilation of Jscript/javascript in IE Copyright: I am only

As we all know, advanced browsers can use the Json.parse () API to parse a JSON string into JSON data, slightly defective, and we can use the eval () function. var str = ' {' name ': ' Hanzichi ', ' age ': '; var obj = eval (' (' + str + ') '

Math Object The Math object is a built-in object that you have learned in high school math class. It knows all the formulas that solve the most complex mathematical problems, and if you give it the numbers to deal with, you can calculate the result.

Full-Text Search, unlike most other problems in machine learning, is a common problem that Web programmers often encounter in their day-to-day work. The customer may ask you to provide a search box somewhere, and then you will write a SQL statement

Copy Code code as follows: var beatles = ["John", "Paul", "George", "Ringo"]; The Beatles array above is a typical example of a traditional array: the subscript for each element is a number, and the number increases by 1 for each

What is cross-domain JavaScript is not allowed to call objects on other pages across domains for security reasons. But it also brings a lot of trouble to injecting IFRAME or AJAX applications at the same time as security restrictions. Here's a

Chapter II JavaScript syntax2.1preparing the environment for writing javascript: text editor+code written by a Web browser in JavaScript must be HTML-The/xhtml document can be executed. There are two ways to do this.The first is to put JavaScript

Describes how to add an interceptor to the $ http service built in Angular. js and how to add an interceptor to angular. js. Preface In the Angular framework, the creation team encapsulates Ajax requests for users and exposes related interfaces

Node + express crawler tutorial, node Crawler I recently started to learn node. js again, and I forgot everything I learned before. So I want to learn it again, so let's start with a simple crawler. What is crawler? Baidu encyclopedia's explanation:

The pitfall encountered by date functions such as new date in JavaScript in safari, datesafari Recently, when I was working on mobile Web, Chrome debugging was successful on the PC, but a strange problem occurred when I tested the iPhone. After a

After reading this article, 1. Note whether setTimeout references all variables or local variables. When the external function method is called directly, the internal variables of the function have actually become global. 2. Remind me to prevent