JavaScript

The example in this article analyzes the usage of inheritance in JavaScript. Share to everyone for your reference. Specifically as follows: Define the person Class function person () {} Person.prototype.walk = function () { alert (' I am

JS Event Binding Event bindings, this uses the principle of bubbling, starting with the clicked element, and recursively propagating events to the parent element, the advantage of which is that for a large number of elements to be processed, you do

The example in this article tells you how to eject a transparent floating layer after the JavaScript click button. Share to everyone for your reference. The specific analysis is as follows: Click here to realize the page after the gray, and JS

A queue is a linear table that allows insertions only at one end and another for deletion operations, and queues are a first-in, first-out (FIRST-IN-FIRST-OUT,FIFO) data structure Queues are used very frequently in program programming because

This example describes the use of Exec functions in JavaScript. Share to everyone for your reference. Specifically as follows: The EXEC function in JavaScript that runs a lookup in a string with a regular expression pattern and returns an array

The position of the element is measured in pixels, to the right represents an increase in the x-coordinate of the Y coordinate, but there are two different points as the origin of the coordinate system: the x and y coordinates of the elements can be

The examples in this article describe two ways to create createelement in JavaScript. Share to everyone for your reference. The implementation method is as follows: createelement two ways to create T;input type= "button" value=

There are two original types in javascript: null and undefined. These two types often make JavaScript developers wonder when they are null and when are undefined? The undefined type has only one value, that is, undefined. The default value for a

This example describes how JavaScript validates e-mail addresses and MX records. Share to everyone for your reference. Specifically as follows: Tests for a valid e-mail address and optionally Tests for valid MX records, too. function

$ (function () {var input_type = {Init:function ($obj) {this.name = $obj. HTML (). Split ("") this.length = This.name.length; this.i = 0; Pri:function () {var $this = this//can only use closures here because windown.settimeout

The example in this article summarizes the JavaScript method for removing whitespace. Share to everyone for your reference. Specifically as follows: Here str is the string to remove the space: Remove all spaces: Copy Code code as follows:

The example in this article tells you how to delete a child node created by JavaScript. Share to everyone for your reference. Specifically as follows: JS created the node, temporarily do not know how to delete ... It took a whole lot of time.

This article describes the way JavaScript lets textarea support the TAB key. Share to everyone for your reference. The implementation method is as follows: HTMLTextAreaElement.prototype.getCaretPosition = function () {//return The caret

In this paper, we illustrate the common functions of multiple layer switching effects of javascript implementation. Share to everyone for your reference. The implementation methods are as follows: function Changediv (tagid,tagname,divid,divname,

The script in 1.HTML must be located between the tags. Scripts can be placed in the and sections of HTML pages 2. If you need to access an HTML element from JavaScript, you can use the document.getElementById (ID) method 3. You can write

JavaScript provides two ways to convert a string to all uppercase or lowercase, so that you can change "hello" to "hello" or "not" to "not". You may ask, why? Converts letters in a string to the same case, which makes it easier to compare two

Another mechanism in javascript: cookies, you can achieve the requirements of a true global variable. A cookie is a mechanism provided by the browser that provides the cookie properties of the document object to JavaScript. It can be controlled by

The examples in this article describe the way JavaScript uses regexp to make regular matches. Share to everyone for your reference. The implementation method is as follows: The wants this article to help you with your JavaScript

Code Judgment One: click me Execute it, no surprises. All browsers will die because there are too many for loops, very CPU intensive, and based on JavaScript single-threaded facts, browser UI rendering is suspended and causes

Form validation is almost indispensable, some form validation is done in the background, and some are using JavaScript in the front-end to complete the basic verification, so that you can effectively reduce the pressure on the server, the following