Object-oriented JavaScript (1): namespace

For Javascript in small projects, you only need to write a few functions. However, in large projects, especially in developing websites that require good user experience, such as SNS, a large amount of javascrpt will be used. Sometimes the Javascript workload is better than C #, at this time, writing a bunch of functions will become messy, messy, and even cause name conflicts, making management and maintenance quite troublesome. In this case, we need to use the object-oriented idea to develop JavaScript. Let's do this:

For a project, you must first have a namespace. So the first thing we need to do is define a function to register a namespace.CodeAs follows:

// Declares a Global Object registernamespace function. The parameter is the full path of the namespace, for example, "cnblogs. blog"
Registernamespace =   Function (Fullname ){
// Cut the namespace into N parts
VaR Nsarray = Fullname. Split ( ' . ' );
VaR Streval =   "" ;
VaR Strns =   "" ;
For ( VaR I =   0 ; I < Nsarray. length; I ++ ){
If (I ! =   0 ){
Strns + =   " . " ;
}
Strns + = Nsarray [I];
// Create statements to construct namespace objects in sequence (if they do not exist)
Streval + =   " If (typeof ( "   + Strns +   " ) = 'Undefined ') "   + Strns +   " = New object (); "
}
If (Streval ! =   "" ) Eval (streval );
}

Now let's register several namespaces. Let's take the blog Park as an example. There are several modules "blog", "news", and "group" in the blog Park "......

Registernamespace ( " Cnblogs. Blog " );
Registernamespace ( " Cnblogs. News " );
Registernamespace ( " Cnblogs. Group " );

In fact, the namespace here is an object, an object.

If you write a bunch of functions, it is inevitable that there will be a variable or function name conflict. The namespace is applied and the code is easy to manage.

Address: http://www.cnblogs.com/xumingxiang/archive/2010/04/30/1725148.html

Author: Xu mingxiang
Source: http://www.cnblogs.com/xumingxiang
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