JavaScript

In Javascript, functions can be easily serialized (stringized), that is, the function source code is obtained. however, the internal implementation (engine implementation) of this operation is not as simple as you think. spiderMonkey has used two

Js generally has two different data types:Basic type (including undefined, Null, boolean, String, Number), passed by value;The reference type (including arrays and objects) is passed by address. The reference type is the address in the memory when

Copy codeThe Code is as follows:

untitled document 1 11 move up move down 2 22 shift move down 3 33 move up move down 4 44 move up move down 5 55 move up move down [Ctrl + A select all Note: If you need to introduce external

aa aa aa aa aa [Ctrl + A select all Note: If you need to introduce external Js, You need to refresh it to execute]Note: The Code does not comply with the standards. You can modify the code as needed.

Waterfall flow layout analysis Talking about the problems and solutions encountered by individuals in implementing waterfall web pages Tossing: waterfall flow layout (based on the multi-column list Fluid layout) Javascript waterfall stream, Major

Copy codeThe Code is as follows: The BUG that occurs when entering Japanese + fullwidth is mainly the code in the middle of the red line.The idea is to interrupt the input status of Japanese.If the input exceeds the limit, use solution ②. Otherwise,

For example:If (! MyVar01) alert ("error occurred ");// This Code directly causes an exception because the variable myVar01 does not declare if ("undefined" = typeof myVar01) alert ("error occurred ");// This will not cause exceptions.Var myVar01;

Core code:Copy codeThe Code is as follows:// Obtain the window heightVar success wheight;// Obtain the window widthVar implements wwidth;// Obtain the pop-up window widthVar popWidth;// Obtain the pop-up window heightVar popHeight;Function init

Copy codeThe Code is as follows:Function initialize (){Addcloud (); // adds a mask to the pageDocument. onreadystatechange = subSomething; // listen for loading status changes}Function addcloud (){Var bodyWidth = document.doc umentElement.

Copy codeThe Code is as follows:Var _ WName = 'dotopalert '; // window IDVar _ Lastver = 1; // remote version numberVar _ Timespan = 1; // COOKIE time: hourVar _ Alertimg = "http: // www. **. com/js/ads/alert.png"; // image addressVar _ WUrl = 'HTTP:

The task of jQuery code is to generate jQuery object A, operate jQuery object A, generate jQuery object B, and operate jQuery object B ...... However, if the objects A, B ...... There is a relationship between them, so there is no need to go to $

Code content andThe accounting. js code is as follows:Copy codeThe Code is as follows:/*!* Accounting. js v0.3.2* Copyright 2011, Joss Crowcroft** Freely distributable under the MIT license.* Portions of accounting. js are wrongly red or borrowed

Copy codeThe Code is as follows:Function xmlToJson (xml ){// Create the return objectVar obj = {};If (xml. nodeType = 1) {// element// Do attributesIf (xml. attributes. length> 0 ){Obj ["@ attributes"] = {};For (var j = 0; j Var attribute = xml.

In this article, I have collected 40 great jQuery navigation plug-ins and tutorials for you. As an important part of a website, navigation can help users find what they want. Therefore, the quality of navigation design determines that users can stay

First, analyze the event location attributes in different browsers:1. The event. x and event. y of IE are the reference points (excluding the rolling distance) of the parent element of the event trigger element)2. The event. pageX and event. pageY

Factory method Create and return specific types of objects.Copy codeThe Code is as follows:Function createCar (sColor, iDoors, iMpg ){Var oTempCar = new Object ();OTempCar. color = sColor;OTempCar. doors = iDoors;OTempCar. mpg = iMpg;OTempCar.

A function self-execution is often required. Unfortunately, this method is incorrect:Copy codeThe Code is as follows:Function () {alert (1 );}(); The reason is that the first half of "function () {alert (1) ;}" is treated as a function declaration

First, let's look at the html code:Copy codeThe Code is as follows: auto growing textarea this textarea will grow indefinitely. The following is the js plug-in code:Copy codeThe Code is as follows:(Function ($ ){$. Fn. autogrow = function

Copy codeThe Code is as follows: test