JavaScript

From the worry-free script collection, some are indeed good, more practical, it is worth collecting.How to extend the prototype object of ArrayCopy codeThe Code is as follows:// Delete the data in the arrayArray. prototype. del = function (n){If (n

Use js to control behavior and control page performance. I'm afraid it is the most thing we use it to do...Why is jQuery so popular? I think, on the one hand, its selector [selector] is good enough, and on the other hand, it should be attributed to

1. Math. min () and Math. max () return the minimum and maximum values of the parameters respectively. Example:Alert (Math. min (1, 2, 3) // output "1"Alert (Math. max (1, 2, 3) // output "3"2. Math. abs () returns the absolute value of the

1. execution time Window. onload can only be executed after all elements including images in the page are loaded.$ (Document). ready () is executed after the DOM structure is drawn. You do not have to wait until the loading is complete.2. different

Jquery radio, checkbox, select, radio, checkbox, select, and relatedObtains the value of a set of radio selected items.Var item = $ ('input [@ name = items] [@ checked] '). val ();Obtain the text of the selected select item.Var item = $ ("select [@

Examples: Copy codeThe Code is as follows:Function case1 (num ){Switch (num ){Case 1:Document. writeln ("show 1 !! ");Break;Case 2:Document. writeln ("show 2 !! ");Break;Case 3:Document. writeln ("show 3 !! ");Break;Default:Document. writeln ("show

Copy codeThe Code is as follows:// Static method of String objectObject. extend (String ,{Interpret: function (value ){Return value = null? '': String (value );},SpecialChar :{'\ B': '\ B ','\ T':' \ t ','\ N':' \ n ','\ F':' \ F ','\ R':' \ R ','\\'

Because functional programming uses a completely different way of organizing programs, programmers who are used to using imperative examples may find functional programming a little hard to learn. In this article, you will learn some examples about

The ajax space and paging functions used in the SQL Business Edition are very good for learning their js Code.// Ajax ControlFunction PageAjax (){Var xhrObj = null;If (window. XMLHttpRequest){XhrObj = new XMLHttpRequest ();}Else if (window.

The following describes how to asynchronously retrieve all the nodes of a tree. The specific method is very different from that of the official synchronous node retrieval, especially in the json id attribute. Below are some of my explorations, it

Usually used directlyThe biggest problem in the window. open Method pop-up window is blocking some browsers or tools, which is hard to solve,The last time I suddenly thought that it would not be blocked when the user clicks the connection and then

I just learned JavaScript and hope you can help me!This is the code selected by project participants in a management system. The problem to be solved is:1. After you click "select person", a new window is displayed. You can search for a person by

Copy codeThe Code is as follows:// Jquery verification emailFunction checkSubmitEmail (){If ($ ("# email"). val () = ""){// $ ("# ConfirmMsg" pai.html (" the email address cannot be blank! ");Alert ("email cannot be blank! ")$ ("# Email"). focus ();

What is the difference between = (equal to) and = (all equal to) in Javascript?Let's take a look at two examples: Var n = '20140901 '; If (n = 100) { Alert ('equals '); } Else { Alert ('not equal '); } The result is "equal "; When determining

IntroductionThis article briefly introduces some basic and powerful methods for DOM 1.0 and how to use them in JavaScript. You can learn how to dynamically create, retrieve, control, and delete HTML elements. These DOM methods also apply to XML. All

1. Compression Tool It is used to compress your JS code online. It has an option "Include latest jquery. min. js", which is very helpful for improving the speed. Recommendation reason:Reduced code = smaller file size = faster webpage loading speed

Copy codeThe Code is as follows:Function GetDIVORPIV (DIV){Var str;Var arrayDIV = new Array ();If (DIV. indexOf ("_")> 0){ArrayDIV = DIV. split ("_");Str = arrayDIV [1];}Else{Str = "";}Return str;}Function GetDIVandPIV (DIVPIV){Var strDIVandPIV;Var

It is worth mentioning that the current Node sought after by Web developers. javaScript allows JavaScript to run in more environments, even on the server side of the website, so that this language has attracted attention again. Today, I will share

For example, if A writes A class to B and B finds that the function of the class written by A is insufficient, but B does not have the right to rewrite the file of A, what should I do? JavaScript object-oriented 16. dynamically add attributes or

In the js learning process, the most basic knowledge must be clarified. No matter which web language is used, JavaScript frontend cooperation is indispensable. The most basic knowledge must be clarified during js learning. Neither the web language