CODEWITHSUNDEEP
javascript
Legotin
Legotin

Reputation: 2688

Defining function arguments as local variables

Sometimes I see two different ways to define default value for function arguments.

The first one is to redefine argument value like that:

var callName1 = function( name ) {
 name = name || 'John';
 console.log( 'Hello, ' + name );
};

The second one is to define local variable with the same name: 

var callName2 = function( name ) {
 var name = name || 'John';
 console.log( 'Hello, ' + name );
}

Both of this methods are working the same.
So, I have two questions:
1) What's the point to define local variable with same name in the second way?
2) Which of these ways is more correct?

Upvotes: 0

Views: 59

Answers (1)

Quentin
Quentin

Reputation: 943635

There is no difference between them. var statements for variables which are already local to the function have no effect.

Upvotes: 6

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