Precautions for function declaration

1. Declare the JavaScript function before using it.

2. The function life should not appear in the statement block. The example is as follows:

If(Condition ){FunctionDosomething () {alert (1);}}Else{FunctionDosomething () {alert (2) ;}} Dosomething ();

In the above Code, regardless of the condition calculation result, most browsers use the second declaration. In Firefox, appropriate statements will be selected based on calculation. This situation should be avoided as much as possible.

Precautions for function declaration