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

1. ConceptThe previous blog post we talked about the list, where a method remove () is a temporary comment, this method is a bit complicated, you need to add a previous () method to find the element to delete the previous node, this blog post we

JS inside about the movement of the framework is more, starting from the basic, I feel that the buffer movement is more important than the teaching basis, first provide a small example.This is about the buffer movement more practical ideas, should

DOM OperationsIn order to write this essay really is a lot of effort, although still write bad. Originally from Monday began to write, but Tuesday Wednesday busy to help recruit new, hahaha. Feel like doing something special fun, although very busy.

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,

1, the use of this1) As the object's method call, this refers to the object itselfvar obj={A:1, geta:function() { alert (this ===obj); Output: True // output: 1 } }Obj.geta ();2) as a normal function call, this refers to the

by Zhangxinxu from http://www.zhangxinxu.comThis address: http://www.zhangxinxu.com/wordpress/?p=2515If we do not do anything, Ie6~ie8 browser does not support HTML5 elements, , , , ...However, the previous Google front-end specification in the

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

A detailed description of the prototype property in JavaScript This article details the disadvantages of the constructor and the prototype (prototype), the prototype chain (prototype chain), the constructor (constructor), Some features of the

Date Type:Description: JS provides a date type to handle time and date, a date type built in some columns Gets or sets a method of datetime information, date type initialization parameters are saved with a timestamp Create Date object, default

Code 01:intvar a = 10;a.name = "HelloWorld"; alert (a.name);OutputUndefinedCode 02:stringvar a = "abc"; a.name = "HelloWorld"; alert (a.name);OutputUndefinedCode 03:stringvar a = new String (); a.name = "HelloWorld"; alert (a.name);Orvar a = new

1. Use JavaScript 1, elements in HTML defines the following 6 properties:Async: Optional, asynchronous download of external script files.CharSet: optional, by specifying the character set of the code through the SRC attribute, most browsers ignore

Passing Objects When we copy an object or pass an object to a function, it is often passed a reference to that object. So we make any changes to the object's references, which in effect will affect the original object of the reference.var she =

For example , array a:[0:5,1:2,2:4,3:3,4:1]The results are as follows: [1, 2, 3, 4, 5], but sometimes there is a need to keep the pre-order position in a single array, as in the preceding example: [4, 1, 3, 2, 0], so a separate array ordering

Two-column layout (one-column fixed width, one-column adaptive, high column height), two-column adaptive Structure: 1 2 3 left4 5 6 right7 right8 9 1. Use table + table-cell

JS to partially zoom in or out images. js to partially zoom in Images This example describes how to partially zoom in or out images in JavaScript. We will share this with you for your reference. The details are as follows: Magnifier

Native JS implementation-simple example of star rating system and js Rating System Today, I wrote another cool example: star rating system (you can customize the number of stars and display information)SufuStar. star ();Use the default value of 5

Js form elements checked, radio Selected methods (detailed description), checkedradio 0. Environment lol Var lol = document. getElementsByTagName ("input") [0]; 1. HTML DOM A. lol. checked = true; The attribute value can be not lol, as long

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

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