JavaScript

1. Both JavaScript and variables are case sensitive.2. Single quotes and double quotes can be used to create strings without special differences in JavaScript. However, as a general rule, most developers prefer to use single quotes instead of double

This instance displays the last modification time of the webpage file. First, add a text box control on the page, and then create a function using javascript to call the lastModified attribute of the document Object in the function, then, the last

Javascript contains three event handles in the input states of the corresponding keyboard: keydown, keypress, and keyup.The corresponding meaning is: the button is pressed (the button is pressed but not yet lifted), click the button (Press and raise

1. The JQuery selector inherits some of the CSS and path speech syntaxes and allows you to quickly and accurately select DOM elements by Tag Name, attribute name, and content.2. Compared with JavaScript, JQuery selector has the advantage of simple

Front-end:Copy codeThe Code is as follows:$. Ajax ({Type: "POST ",Url: "GetMenuRole. ashx ",Data :"",DataType: "json ",Success: function (data ){If (data. Status = false ){Alert (data. ErrorReason );}Else {// Parse the menu listAlert (data. MenuList

1. Function declarativeCopy codeThe Code is as follows:Function foo (){// Code} In JS, functions are also objects. Function objects are connected to Function. prototype (Function. prototype is connected to Object. prototype)2. Function literal

Clever 1: FunctionsFunctions are a rare talent in javascript code.♥It can return code segments and encapsulate relatively independent functions.♥It can also implement classes and inject OOP ideas.JQuery is a function, and you can also treat it as a

Preface In the previous article, we explained the virtual edge of the image. This article begins to process the image smoothly (that is, blur. Basic Principles Here we directly reference OpenCV 2.4 + C ++ smooth processing and OpenCV 2.4 + C ++ edge

What is JS event bubbling? Trigger a certain type of event on an object (such as clicking an onclick event). If this object defines the event handler, this event will call this handler, if the event handler is not defined or the event returns true,

jQuery drop-down effect you cannot refresh the demo. click to try it [Ctrl + A select all Note: If you need to introduce external Js, You need to refresh it to execute]

CSS3 3D text Animation [Ctrl + A select all Note: If you need to introduce external Js, You need to refresh it to execute]

Json object Copy codeThe Code is as follows:Var json = {aa: true, bb: true };Var json1 = {aa: 'B', bb: {cc: true, dd: true }}; 1: js json object operation Copy codeThe Code is as follows:For (var item in json ){Alert (item); // The result is aa, bb,

Features:1. display the number of words that can be entered in real time (in bytes)2. Two restrictions (length and number of bytes)3. The Chinese input method can be used normally without any bugs.4. The same page can be used multiple times without

First look: Requirement: when the input box gets the focus, the verification image is automatically displayed.The Code is as follows (learning is only for reference ):Copy codeThe Code is as follows:/********************** Is the verification code

There are many slide effects of switching images on the webpage. They are mostly implemented in flash. Can javascript implement them? Of course, I wrote one myself and shared it with everyone.Look at the code. Copy codeThe Code is as follows:Sx.

There are two windows: window A (parent) and window B (Modal)Window A contains a datagrid and A button.When you click the button, the B window (Modal) is displayed ). Add data in window B. After submission, ask window B to close itself, and refresh

Code attached:Copy codeThe Code is as follows: /* Put the specific module in this big div */# Contentmenu1 {Width: 100%;Clear: both;Height: 800px;}/* Specific module divConsists of up and down two divThe above div has three rounded corners on the

If jQuery is used only at the usage level, but does not know its specific implementation, it is very easy to use problems. This is why I have never liked jQuery recently. The API settings of this framework may mislead people.Copy codeThe Code is as

Use the document. onreadystatechange method to monitor status changes,Then, use document. readyState = "complete" to determine whether the loading is complete.The Code is as follows::Copy codeThe Code is as follows:Document. onreadystatechange =

Recently, webIM is embedded in the OA system. Because WEBIM is on an independent page, multiple pages will appear if you click it multiple times. In this way, the server push will not recognize the page under ie6. so with the following code:Copy