JavaScript

Jquery in the scroll () event, I want to judge whether the current scroll bar is still vertical;I started to use the global variable to record the scrollTop value for determination. If the front and back values are not changed, the system will

If you cannot understand the operating mechanism of the javaScript language, or simply put, you cannot grasp the execution sequence of javascript, it is like bole cannot control the horse, let the horse go, go around. So how does JavaScript parse it?

This is a vertical navigation on the side created by using jquery animation effects and css. The entire pop-up process is smooth and the code is simple. If you are looking for an animated vertical navigation, you can try this. The following figure

In the past, you may directly set self = this or that = this, and so on. this will certainly work, but using Function. prototype. bind () will be better and look more professional.The following is a simple example: Copy codeThe Code is as

Insert sorting is highly efficient when performing operations on data in almost sorted order, that is, linear sorting can be achieved.However, insert sorting is generally inefficient, because insert sorting can only move one bit of data at a

Copy codeThe Code is as follows:Function (){Alert ("fun ()");}Function B (){Alert ("fun B ()");}Var methodName = "";// Method1MethodName = "";Function method1 (methodName ){// Initialize this. func attribute,This. func = function (){};Try {// The

Copy codeThe Code is as follows: JQuery CodeCopy codeThe Code is as follows:$ (Document). ready (function (){If ($. cookie ("rmbUser") = "true "){$ ("# Ck_rmbUser"). prop ("checked", true );$ ("# Username"). val ($. cookie ("username "));$ ("#

Javascript Design Pattern

Sometimes you may wonder that when using JavaScript, you only need to assign a value to a system variable to trigger a series of operations. However, when writing Js, we modified a custom variable, but not even P. Is it depressing? In fact, now we

; (Function ($) {$ (function () {$ ('[data-qqmotion-input]'). each (function () {var qm = new qqmotion (this) ;}) var qqmotion = function (e) {var $ e =$ (e ); var $ parent = $ e. parent (); this. $ icon = $ e; // optimize the skin using parent.css (

Before getting started, let's look at Javascript Promise:Copy codeThe Code is as follows:Var p = new Promise (function (resolve, reject ){Resolve ("hello world ");});P. then (function (str ){Alert (str );});1. then () returns a Forked Promise What

As a beginner in development, this is just a personal backup. It would be nice if it could be helpful (I used php for development, but this is js, which has little impact on it)Here are several questions:1. The script tag cannot be displayed on the

ReplaceChild (a, B) is used to replace existing elements in the document.Parameter a: the node to be inserted,Parameter B: the node to be replacedCopy codeThe Code is as follows:Var oDiv = document. getElementById ("guoDiv ");Var oSpan = document.

The cloneNode (a) method accepts a Boolean parameter, indicating whether to copy data in depth.True: Performs deep copy to copy the current node and the entire subnode tree.False: copy the node only.The node copy returned after the copy belongs to

This article mainly introduces how to format a number into an amount in js. You can use the plus or minus commas to process the amount. A code to format the amount. For more information, see. Example 1: change the number 1111111 to 11,111,111.00 and

This article mainly introduces the js method for deeplink (determine whether the app is installed on the mobile phone). If you need it, refer Code function: Determine whether an app is installed on a mobile phone or tablet If it is installed, the

Cutting an image is not really cutting, but it is just a part of the image with CSS. The advantage of this is that it reduces the number of requests for images when opening a webpage. There are two main methods: one is the background image of an

Plug-in download: https://github.com/GBKS/Wookmark-jQueryOfficial homepage: http://www.wookmark.com/jquery-plugin After downloading the plug-in, reference the plug-in JS file on the webpage:Copy codeThe Code is as follows:HTML code structure:Copy

Function sAlert () { Var msgw, msgh, bordercolor; Msgw = 450; Msgh = 120; Titleheight = 25; Bordercolor = \ "# effece8b \"; Var sWidth, sHeight; SWidth = screen. width; // obtain the width and height of the screen. For other parameters, see the

Today, I wrote a question about the double-click event of JQ to prevent multiple submissions. In addition, the function can be defined in batches to improve the accessibility and dynamically bind element events through methods. In addition, the