JavaScript

The second parameter of JavaScript's replace () is the parameter of the function: The replace () function has a replacement function, it can have two parameters, the first argument can be a string to be replaced or a regular expression that

In JavaScript, in addition to if ... else and switch statements, there is also a unique three-mesh operator? ...:, also can be used for simple selection structure. Grammar: Conditions? STATEMENTA:STATEMENTB; The above statement, first judge the

The web site will often use JavaScript in the movement, this time to share some of the basic sports applications. Convenient for everyone to use directly in the development. The code is easy to understand and is suitable for beginners. Finally, a

First look at a piece of code: settimeout (function () {Alert ("a");}, 0);while (1);Alert ("B"); Hopefully in Mashan you can pop up a warning box "a" to but always did not come to, and, in Firefox ran also got such a hint, and prompted you to

As the web grows, front-end applications become more complex, and JavaScript (Node.js), based on back-end, is starting to emerge, while JavaScript is being placed in greater anticipation, while JavaScript MVC is becoming popular. JavaScript template

# 1 JavaScript functions allow you to access variables defined outside the function If you know the concept of JavaScript's scope chain, it's not hard to understand this one.In a word, JS looks for the definition of a variable from the nearest area,

Open a window in HTML We already know how to open a window in HTML. In most current browsers, you can open a new window with an HREF statement, such as: Click The code is as follows Copy Code here You can

Use JS to get the value of the two-digit input box on the page and compare it to size. The result may be confusing to you, such as code: The code is as follows Copy Code var v1 = $ (' #input1 '). Val ();var v2 = $ ('

There are two types of ECMAScript integers, that is, signed integers (allowed with positive and negative numbers) and unsigned integers (only positive numbers are allowed). In ECMAScript, all integer literals by default are signed integers, what

But there is no corresponding mechanism in JavaScript, but JavaScript is very flexible, we can use its features to imitate interface, but we need to add some methods to do check action We can still use programs to simulate the implementation of

First of all, we need to load this XML file, JS load XML file, is through the XMLDOM. The code is as follows Copy Code 112233445566 Htm How to use The code is as follows Copy Code

Document ObjectEach HTML document that is loaded into the browser becomes the object of the document, allowing us to access all of the elements in the HTML page from the script, which is part of the Window object and can be accessed through the

1. Length Limit The code is as follows Copy Code 2. Can only be Chinese characters The code is as follows Copy Code 3. can only be English The code is as

The Screen object contains information about the client display screens.The screen property of each Window object refers to a screen object. The screen object holds information about displaying the browser's screens. JavaScript programs will use

1.html The code is as follows Copy Code First line Second Line Third Line 2.css The code is as follows Copy Code . box{width:150px;height:25px;line-height:25px;border: #bbb 1px

For example, it is so easy to reverse all the words in a string by using the replace () process. Result: is only replaced with the first character of the string A This is not the result I want to see ↓ Home 1 2 last page

Direct volume syntax /pattern/attributes To create the syntax for a RegExp object:Copy code code as follows:var obj=new regexp (pattern,attributes); Case 1:Copy code code as follows:var pattern=/a/;document.write (Pattern.exec ("Asdas")); Case 2:

Tip: you can modify some code before running JavaScript controls the automatic playback effect of image albums in seconds Interval3 seconds5 seconds8 seconds10 seconds  

I. Function creation processBefore learning about the prototype chain, let's take a look at what a function does during creation. Let's take an example of an empty function:Function (){};When we declare such an empty function in the code, the

Tip: you can modify some code before running Javascript imitation window multi-window desktop effect (with simulated alert () Prompts. And confirm ())Window type Tip: you can modify some code before running