JavaScript

The idea is very simple:1. httpserver obtains the url to be restored;2. Use httpclient to recursively request this url until http status not in (302,301) is found.3. Return the restored original url.The Code is as follows:Copy codeThe Code is as

ScenarioHow can we achieve "ajaxStart" in a specific request?First, the price for rewriting Ajax methods is too high, and jQuery's own Ajax Events can still be used.Global events triggered by Ajax are transmitted to all DOM nodes like a standard

JavaScript get/Set cursor position, compatible with Input & TextArea. JavaScript obtains/sets the cursor position. compatible with Input & TextArea: single-line text box input Position: multi-line text box Hi, CssRain !!! input

Copy codeThe Code is as follows:Function xntest (){Var d1 = new Date ();Var str = "";For (var I = 0; I Str + = "stext ";}Var d2 = new Date ();Document. write ("Time consumed by String concatenation:" + (d2.getTime ()-d1.getTime () + "millisecond ;");

First look at the phenomenon:Copy codeThe Code is as follows: Result: 200All browsers get the correct resultsChange the inserted element to IMG.Copy codeThe Code is as follows: (Note: The actual width of image1.jpg is 693)Result:Opera: 34Firefox: 0

Copy codeThe Code is as follows:/**2 * retrieve array elements (prototype extension or overload)3 * @ param {o} The retrieved element value4 * @ type int5 * @ returns element index6 */7 Array. prototype. contains = function (o ){8 var index =-1;9

Code:Copy codeThe Code is as follows:// Page code (simplified)CssClass = "ui-button-icons-only" Text = "button"> Edit View Build Haha is actually very simple, but it contains a lot of things. For details, refer to the relevant materials ~

Open its "page source file" and you can find an encrypted JS script:Copy codeThe Code is as follows:Function ypol (){// K is an object, which is actually an array. Stores a bunch of encrypted pr * n site links.Var k = {0: "qpsoivc/Rann", 1: "sfeuvcf/

Object-oriented and Object-based Almost every developer has development experience in object-oriented languages (such as C ++, C #, and Java. In traditional object-oriented languages, there are two very important concepts: classes and instances.

Let's take a look at this example!Copy codeThe Code is as follows: jqueryDemo: quanjiaoNum Convert Chinese numbers to Arabic numerals: This is a mobile phone number judgment problem! In addition, please note that jquery is also used! Remember to

Author: Yan Shiwei Email: ikmb@163.com reprinted authorNote: 1. js combines the name and value of the form element into json format based on the class attribute of the form element. JSON data can be combined in a targeted manner using the class

There is a select element on the page with the id of customer. Many Methods on the Internet that introduce jquery to reference the selected value of select are used:Copy codeThe Code is as follows:$ ("# Customer option [selected]"). val ();This

1. load required files in external CSS files@ Importurl(style.css );// It can only be used in CSS files or style labels2. Simply load an external CSS file in the pageDocument. createStyleSheet (cssFile );2. Use the createElement method to create the

Javascript calls the parent window (parent page) MethodDifferences between window. parent and window. opener javascript calls the Main window Method1: window. parent is the parent page object called by the iframe page2: window. opener is a child

Province: Select Shandong City: = Select =Weihai CityDezhou CityBinzhou City Districts and counties: = Select Villages and Towns =WeihaiWendengRongchengRushan Province, city, and district/county Data Structure:

onfocus and OnBlur example [Ctrl + A select all Note: If you need to introduce external Js, You need to refresh it to execute]

1. the attribute added to the DOM object is an object reference. Example:Var MyObject = {};Document. getElementById ('mydiv '). myProp = MyObject;Solution:In the window. onunload Event, write: document. getElementById ('mydiv '). myProp = null; 2.

1. replace ()Example:2. search () Example:3. slice () selects a part of the string to generate a new string Example:4. match () searches for the specified value from the string. It returns the specified value instead of the position of the specified

Copy codeThe Code is as follows: js Image Upload preview Save it to The. htm format.

1 2 3 4 [Ctrl + A select all Note: If you need to introduce external Js, You need to refresh it to execute]