JavaScript

Let's take a look at the defects of the shortest replication. I don't know how many people have done it? CopyCode The Code is as follows: var ooriginal = { Memnum: 1, // number Memstr: "I am a string", // string Memobj :{ Test1: "old value" //

First: jsfiddleA powerful JS online debugging tool that supports a variety of mainstream frameworks for a variety of applications and can be directly edited and debugged online: HTML, CSS, and JavaScript, which is very convenient to use, in addition,

1. You can write various assignment statements in your work. For example, the most common obj. style. Display = "NONE "; If there are more than one assignment statement, obj. style will be dizzy in a row. The following extend functions in my

Html CopyCodeThe 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

I. Insert Option 1. DOM method VaR oselectyear = Document. getelementbyid ("selectyear "); VaR op = Document. createelement ("option "); Op. innerhtml = "2010 "; Op. value = "2010 "; Oselectyear. appendchild (OP ); 2. New Option MethodVaR

For more information, see dynamic this and dynamic binding instance code in JavaScript. This article focuses on designing a non-intrusive binding function. [Ctrl + A select all Note: If you need to introduce external JS, You need to

Some people say that JavaScript is also object-oriented, but it is prototype based. Of course, this is only a conceptual difference. I don't want to discuss whether Javascript is object-oriented, the key is to explain that although JavaScript

When visibility is set to "den", although the element is hidden, it still occupies its original position. --------------------------------------------------------------- Example: CopyCode The Code is as follows: the first line of text triggers

The rendering of the box model by IE is very different in standards mode and quirks mode. The interpretation of the Box Model in standards mode is the same as that in other standard browsers, however, in the quirks mode, there is a big difference.

CopyCodeThe Code is as follows:/* written by XP in 8z at Mar 4, 2010.qq: 251089096 */ VaR suseragent = navigator. useragent; VaR isie = isie6 = isie7 = isie8 = isfirefox = false; If (suseragent. indexof ("MSIE")>-1 ){ Isie = true; VaR version =

In fact Code Some redundancy is generated... it is better to write a slider class as the first version or save it for a while. Try to write a slider class separately. Xmlns = "http://www.w3.org/1999/xhtml"> 0% 0%

CopyCode The Code is as follows: // Directly declare the JSON Data Structure VaR myjsonobject = {"bindings ":[ {"Ircevent": "PRIVMSG", "method": "newuri", "RegEx": "^ http ://.*"}, {"Ircevent": "PRIVMSG", "method": "deleteuri", "RegEx": "^ Delete .

1. Document. Write (""); Output statement2. Comments in JS are //3. The traditional HTML document sequence is: Document-> HTML-> (Head, body)4. the DOM sequence in a browser window is: window-> (Navigator, screen, history, location, document)5. Get

In my opinion, the warning box is only used when the browser does not support other methods for displaying error messages. W3C recommends that we display an error message near the form item. This is a good method, so we only use the warning dialog

Window. Open is usually used to open a new window. To obtain the control of the parent window, you can use window. opener to obtain the parent window. However, if showmodaldialog is used, it is invalid. If necessary, you need to modify the enabled

The difference is that setinterval will be executed once every specified period of time. Code , With repeatability. However, setTimeout is called only once. The following describes two functions through function establishment and automatic function

Why is the result false? CopyCode The Code is as follows: You need to distinguish string from string.Acolors [0] is a string value type. Of course it is not a string instance. Refer to the following codeVaR acolors = ["red", "green",

Please test in Firefox I have read the following example:Js CodeIt is equivalent([] [(! [] + []) [! + [] +! + [] +! + [] + (!! [] + [] [(! [] + []) [+ [] + ([! [] + [] [[]) [+! + [] + [+ [] + (! [] + []) [! + [] +! + [] + (!! [] + []) [+ [] + (!! []

What is unit testing? Unit Testing, also known as module testing, is a test of the correctness of program modules (the smallest unit of software design. Unit Testing is mainly used to test the internal logic of a program, also known as individual

GetElementByTagNames (names in the plural number) obtains some tag elements and stores them in an array in their order. This is very useful. For example, in the TOCScript in the previous chapter, you need to obtain all H3 and H4 in the entire