JavaScript

The function of eval is actually very simple. It is to pass a string to the JS interpreter. The Javascript interpreter interprets the string as Javascript code and runs it.The simplest example is as follows:Copy codeThe Code is as follows: It is

Well, let's build it step by step. First, let's take a look at the original method of inheritance:Copy codeThe Code is as follows: We can see that in fact, the root of inheritance lies in this step Programmer. prototype = new Person (). That is to

The data model of Extjs is divided into the following parts:Data RecordA record in a dataset, including the data definition and value. It is equivalent to an object class.Data ProxyThe proxy used to obtain data. It is equivalent to Datasource.Data

1. Real Person jQuery Plugin 2. Search And Share 3. FancyPlayer-jQuery Fancybox and Flowplayer Integration 4. Speeding up Google Analytics load times with jQuery 5. Price Format-jQuery Plugin 6. jTruncate-Text Truncation for jQuery 7. Slide Top

1. Use hidden iframe to load ad pages.Copy codeThe Code is as follows: Using the above Code will cause iframe to load ad pages. If the page is too large, the speed will be very slow,You can use ajax to implement refreshing loads.Copy codeThe Code

The space is fully displaced by the absolute position of CSS. Before getting started, let's practice the recursive usage of setTimeout (used to simulate setInterval ).Copy codeThe Code is as follows:Function text (el ){Var node = (typeof el =

1. Date selection box, DateFieldThe date selection box is widely used in daily projects. A convenient date input mechanism can greatly improve user experience. Extjs's DateField is very friendly, flexible, and powerful. You can use the following

SummaryPrivate variables are declared using the 'var' keyword inside the object, and they can only be accessed by private functions and privileged methods.Private functions are declared in the object constructor (or through var functionName =

1. What is an anonymous function? There are three methods to define a function in Javascript: Function keyword (function) Statement:function fnMethodName(x){alert(x);} Function Literals):var fnMethodName = function(x){alert(x);} Function ()

Microsoft's intention to do this is obvious-"implementing" all DOM2 interfaces at a very small cost. Here are two examples:Copy codeThe Code is as follows:Element. prototype. addEventListener = function (evtType, evtHandler ){Return this.

So I want to use a method that is convenient to call and update, and the result is as expected. The technical points are summarized as follows:Before that, I have also looked for implementation solutions for the most popular practices on the network.

Bind eventCopy codeThe Code is as follows:Var addEvent = function (obj, type, fn ){If (obj. addEventListener)Obj. addEventListener (type, fn, false );Else if (obj. attachEvent ){Obj ["e" + type + fn] = fn;Obj. attachEvent ("on" + type, function

(10) addEvent The most popular version on the internet is Scott Andrew. It is said that the javascript community held a competition (this event can be seen on Pro Javascript Techniques page 100th) or browsed the PPK website, ask for the function to

Copy codeThe Code is as follows:Function getEvent (){Var I = 0;If (document. all ){Return window. event;}Func = getEvent. caller;While (func! = Null){Var arg0 = func. arguments [0];If (arg0){If (arg0.constructor = MouseEvent){Return arg0;}}Func =

I made three demos. I wanted to create a Gmail-like interface. Then I suddenly found that there was no Office on the machine, so I simply made a demo like a PPT.Js-based application development is summarized as follows:Encapsulation

Dynamically create a DIV: var div = document. createElement ("div ");Set div attributes and styles:Div. title = "this is a new div .";Div. class = "newDivClass ";Div. innerHTML = "Test create a div element! ";Div. style. styleFloat = "left ";Div.

vertical center of unknown JavaScript height elements Jb51.net script home [Ctrl + A select all Note: If you need to introduce external Js, You need to refresh it to execute]

friend impressions of kaixin.com what do you know -...... -When you have a good rest, you cannot describe your talents. [Ctrl + A select all Note: If you need to introduce external Js, You need to refresh it to execute]

These two methods are relatively easy to confuse.The filter method filters the current internal elements. This method accepts two parameters: a function that returns bool, or a JQuery selection expression, the elements in the package set are smaller

Here we mainly use slideToggle () and slideUp () to show the hidden content when the target passes through the mouse:Copy codeThe Code is as follows:$ (Function (){$ (". Dropdown"). hover (Function () {$ ("li ul"). slideToggle (800 );},Function () {$