Use JavaScript switch case alternative writing _javascript tips

Accustomed to C # syntax, encountered multiple branch calls, in addition to the simplest if-else, then is switch-case, so the use of JavaScript is very easy to write the following code:

Copy Code code as follows:

JScript Source Code
The value of something is 1, 2, 3 ...
Switch (something) {
Case 1:
Todoa ();
Break
Case 2:
Todob ();
Break
Case 3:
Todoc ();
Break
//...
}

This code itself is nothing, just less readable, looks a bit laborious, JavaScript although support switch-case, but there is a better way to promote:

Copy Code code as follows:

JScript Source Code
The value of something is 1, 2, 3 ...
var cases = {
1:todoa,
2:todob,
3:todoc
};
if (Cases[something]) {
Cases[something] ();
}

Author: Justin
Source: http://justinw.cnblogs.com/