JavaScript

ExtJs itself provides rich space and good interface development, just like WinForm development. However, ExtJs has an imperfect space, but its shortcomings also have its own methods to make up for it. The good scalability of ExtJs is the best method

JS verification function call method and note: 1. Set onsubmit = "return test ()" for the form and submit it with .2. // call function verification directly when you press the mouse3. // pass in your own value for verification, test (this) // pass

The first problem is that there is no standard for button events. According to the standard, the event model containing the keyboard and other input devices will be explained in future DOM specifications.As we have learned, the browser does not have

HTMLCopy codeThe Code is as follows: JavascriptCopy codeThe Code is as follows:Function submit1 (e ){Var isie = (document. all )? True: false; // determines whether the kernel is IE or Mozilla.Var key;If (isie)Key = window. event. keyCode; // IE

See the following code:Copy codeThe Code is as follows:Var a = function (t) {return t ;}(1 + 2). toString ();Alert (); What is the result?In fact, the main problem is that there is no semicolon behind the first line, so it is actually var a =

Generally, in JavaScript, there is no difference between the for and for in array traversal results, its cyclic variable I is an array index starting from 0 (for in, if it traverses a non-array object attribute set, this I is the attribute name or

Document. title // set the document title equivalent to the title tag of HTMLDocument. bgColor // set the background color of the pageDocument. fgColor // set the foreground color (text color)Document. linkColor // The link color that has not been

If ajax technology is frequently used on the client, we have to create xmlhttp objects multiple times. Of course, as you know, we can improve the creation method, such as using global variables to cache an instance (client Singleton mode ?!), This

Is my design philosophyThe following is the specific js Code.1. First, define several user-defined functions.CodeCopy codeThe Code is as follows:// Determine whether it is an arrayFunction isArray (v){Return v & typeof v. length = 'number' & typeof

 How to ImplementStep 1 HTMLCopy codeThe Code is as follows: Home Tutorials latency Ch2 Ch21 Ch211 Ch2111 Ch21111 Ch21112 Ch21113 Ch21114 Ch21115 Ch21116 Ch2112 Ch2113 Ch2114 Ch2115 Ch212 Ch213 Ch2

Very depressing. Do I have to install a browser when I read a blog? I am very lazy. I just want to use IE6!Recently, I was reading jQuery. I just got into the door and found an interesting function. I started my experiment with Lao Zhao's blog.　　

Typeof is used to obtain the type of a variable. Generally, typeof can only return the following results: number, boolean, string, function, object, undefined. We can use typeof to obtain whether a variable exists, as shown in figureIf (typeof! =

In Javascript, the global environment itself is an object. In the browser host, this object is a window, and when Javascript is used for other non-browser hosts, such as embedded environments, it may be other objects.I have also corrected this idea.

In one case, two aspects are simulated: click a super connection event.Firefox compatible FunctionsAdd an onclick event to HTMLAnchorElement Copy codeThe Code is as follows:Try {// Create a element so that HTMLAnchorElement is accessibleDocument.

Copy codeThe Code is as follows:Var rgb2hex = function (rgb ){Rgb = rgb. match (/^ rgb \ (\ d +), \ s * (\ d +), \ s * (\ d +) \) $ /);Return "#" + tohex (rgb [1]) + tohex (rgb [2]) + tohex (rgb [3])}Var tohex = function (x ){Var hexDigits = ['0', '1

If you do not know the cause and do not worry too much, study the CSS rules and read this article: Use CSS to correct everything: 20 + Common Errors and fixes.If these are invalid, you can fix them using the 12 javascript solutions listed below, so

Differences between renderTo and applyTo in ExtJS Understanding and thinking about applyTo and renderToI personally think that these two articles are not popular enough. Write a simple example to see what code is generated,Copy codeThe Code is as

Copy codeThe Code is as follows:

Requirement Use gb2312 to encode Chinese Characters in js. For example, "I" should be encoded with "% CE % D2 ".Analysis As you know, encodeURI and encodeURIComponent use UTF-8 encoding, for example, "% E6 % 88% 91" after "I" encoding ". According

1. Key Value of the letter and number key (keyCode) Buttons Key code A 65 B 66 C 67 D 68 E 69 F 70 G 71 H 72 I 73 J 7