JavaScript

Add or remove objects Function rect (W, h) {This. width = W; this. height = H;} var r = new rect (2, 3);/* Add a calculated area to the r object method area () */R. area = function () {return this. width * This. height}; alert (R. width); //

If (...) {...} else if (...) {...} else {...} Switch (...) {Case A:... break; Case B:... break; Case C:... break; default:... break ;} While (...) {...} Do... while (...); for (I = 0; I With (..){...} Throw new error (

You can use single or double quotation marks. Alert ("in case of 'delphi 'blog"); // In case of 'delphi 'blog alert ('in case of "Delphi" blog'); // in case of "Delphi" blog Escape characters /* X and \ U are two-digit and

Numeric type variables and numeric object variables VaR N, N; n = new number (123); // numeric object variable n = 321; // numeric type variable, you can also use the number class method alert (N ); // 123 alert (n); // 321

We often use dynamic loading of JavaScript. It is easy to write a function. We have also written a function before. However, when loading multiple JS files, we can load them successively according to the order returned by the browser, this is

Jslint is a javascript verification tool (www.jslint.com) that can scan JavascriptSource codeTo find the problem. If jslint finds a problem, jslint will display a message describing the problem and point out the error in the sourceCode. Some

JS minifier is a tool used to filter comments and useless spaces in JS files. You canHttp://fmarcia.info/jsmin/Download its web version. You can also get other information at the bottom of the http://javascript.crockford.com/jsmin.html pageProgram.

Specifications Gooogle JavascriptSpecifications: Http://google-styleguide.googlecode.com/svn/trunk/javascriptguide.xml Jquery core style guidelines Http://docs.jquery.com/JQuery_Core_Style_Guidelines Dojo style guide

I read the book "MVC-based JavaScript web rich Application Development" and admire more advanced JavaScript applications. Compared with the previous use of JavaScript for verification, interface, and other functions, this book explains from

ArticleDirectory 1. What is an anonymous function? Ii. Differences between function literal and function () constructor Iii. Code mode of anonymous Functions Iv. Application of anonymous Functions You can understand multiple

Complete example: examples of using objects and inheritance // Parent class exampleFunction parent (students, teacher ){// Public MemberThis. Name = teacher;This. Students = students;This. Teacher = teacher;// Private member// _ Special variables of

Only numeric amounts can be entered in the restricted input box(Event. keycode 57) event. returnvalue =False; "> 1. oncontextmenu = "window. event. returnvalue = false"Bottom shield right-click NO Available for table2. CancelSelect and prevent

Promotion and so on control the Javascript file displayed by the ad and the Javascript in the source file of the generated ad unit Code All are processed by JS compressors and obfuscators. To reduce the size of these files. When we need to

We all know that JavaScript is an interpreted language executed in the client browser. In other words, JavaScript will be downloaded to the browser in plain text, and then the browser will execute this JavaScript as neededCode. You only

Recently, the Javascript script -- greasemonkey! The script developed by "Shaun friedle" can easily handle CAPTCHA of the Megaupload site. If you do not believe this, go to http://herecomethelizards.co.uk/mu_captcha/and try it yourself! Now, the

1. automatically select text in the text box   2. input box restrictionsOnblur = "If (this. value 12){Alert ('month input is incorrect! ');This. Focus () ;}> 3. Only numbers can be entered in the restricted input box. 57) event. returnvalue =

Function item (ID, name) {This. id = ID; this. name = Name;} var arr = new array (8); arr [0] = new item ('001', 'aaa '); arr [1] = new item ('002 ', 'bbb'); arr [2] = new item ('003 ', 'ccc '); arr [3] = new item ('004 ', 'ddd'); arr [4] = new item

Array direct quantity VaR arr; arr = ['A', 'bb', 'cc']; alert (ARR. tolocalestring (); // AA, BB, ccarr = [11, 22, 33]; alert (ARR. tolocalestring (); // 11.00, 22.00, 33.00/* the array element can be of any type, including the array itself

Unlike other classes, math is not created Cube Method (New Math () cannot be used in this way. All its methods are static (names must be called ). Math. ABS; // absolute value math. max; // the math of the two numbers. min; // The small

JS Code can be in the head or body area, but there are some differences. JS is loaded in sequence with other elements on the webpage. After loading, a syntax check is performed first and then executed sequentially; If JavaScript does not contain the