JavaScript

1. Delay Toggle TabRequirements: There are several tabs on the page, and when you switch tab, the data in a particular area is pulled up and updated. Disadvantage: The user from the first tab switch has been fast cut to the end, will produce n Ajax

http://perfectionkills.com/javascript-quiz/ Here are my thoughts on these topics, some understanding of myself. If you have any different opinions or opinions, please take the bricks. Copy Code code as follows: (function () {

In JavaScript, the scope of a variable is divided by function-the variable is valid within the scope of a function. Like what: Copy Code code as follows: var f = false; if (true) {var f = true;}//This time F is within the IF, that

1. Document.form.item question(1) Existing problems: There are many Document.formName.item ("itemname") statements in existing code that cannot be run under Firefox (Firefox) (2) Solution: Switch to document.formname.elements["ElementName"] (3)

The functions are as follows: Copy Code code as follows: foreach = function (obj, Insp) { if (obj== null && obj.constructor!= Array) { return []; } obj is the array to process, Obj==null indicates that the object does not

Test code: [Ctrl + A All SELECT Note: If the need to introduce external JS need to refresh to perform]

1. NaggingThe JavaScript language is an excellent scripting language. The flexibility to include scripting languages also features a number of advanced languages. For example, a garbage collection mechanism (Gc:garbage collecation) is used to build

On the picture material first: Background picture:Cloud Picture: ← —————————— Here is a picture d~ all choose to be able to see (because the background is white, cloud is also white ~) ...CSS code: Copy Code code as follows:

[Ctrl + A All SELECT Note: If the need to introduce external JS need to refresh to perform] As you can see from the code above, it returns true as long as the value is equal to (= =). and congruent (= = =) requires both values and types to match

1. Shift: Deletes the first item of the original array, returns the value of the deleted element, or returns undefined if the array is empty var a = [1,2,3,4,5]; var B = A.shift (); a:[2,3,4,5] B:1 2. Unshift: Adds a parameter to the beginning of

There is no definition of a class in JavaScript, there are no fixed templates when creating objects, you can create new properties and methods dynamically, and when creating new properties dynamically, all we can do is create a new value for this

The original code: Copy Code code as follows: Convert Text to 16 function Texttosix (str) { return Escape (str). replace (/%/g, function () { return "\"; }). toLowerCase (); } After the improvement: Copy Code

I just discussed a very interesting question with my colleagues, and there is an idea that needs to record the content that the user has selected on the page, there is a dom2 level event createrange in FF and IE9, there is no longer a burden. The

At first, a lot of people would take the jquery selector to compare these two APIs (me too), and the similarities and differences would have been fine, but some students had misunderstood the implementation of the two APIs in the browser, especially

For this code to go to your Web page you must use the pixel size font (PX) instead of the relative size of the font, using "EM" or "%". Of course, if you use other font units of code can easily adapt to these. If the script cannot find the font size

Copy Code code as follows: ($=[$=[]][(__=!$+$)[_=-~-~-~$]+({}+$)[_/_]+ ($$=($_=!'' +$)[_/_]+$_[+$])])()[__[_/_]+__ [_+~$]+$_[_]+$$](_/_) Note that the seemingly confusing code above is not a line-wrapping, but a three-line (of

For beginners, understanding JavaScript closures (closure) is more difficult, and the purpose of this article is to use the most popular text to uncover the true nature of javascript closures, so that beginners understand easier. One, what is

Case background: The whole function is to remove data from the database, and then play in the interface, simply to say is similar to online watching video, listening to music, but I took the string data, and they take the stream file data. Divided

First phase: Copy Code code as follows: function A () { This.funb = function () { Alert (' A:funb '); }; } A.prototype = { Funa:function () { Alert (' A:funa '); } }; function B () { } function Extend

Let's see if using knockout is simpler to verify the password strength. The original code please view: Copy Code code as follows: Enter the password: Password strength: height= "style=" ' Display:inline ' >