Is there a difference between String(x) and ''

Question

Is there a difference? Will string 2 inherit different object prototypes?

var s1 = 1234 + \'\';
var s2 = String(1234);

//s1.someNewFunc();   error?
//s2.someNew         


        

Answer 1

var s1 = 1234 + '';

Creates a string literal. This is a javascript language primitive.

var s2 = String(1234);

The String() function also returns a primitive string literal. s2 will have the same members as s1 because they are both the same type.

However

var s3 = new String("1234");

Will create an object of type String rather than a primitive string literal. This does have different members and is of type object.