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

Javascript allows you to treat primitive values as though they were objects. It does so by doing an on-the-fly coercion of the primitive to an object. That's why, even though primitives have no properties, something like this is perfectly fine:

"abcde".substr(1,3); //bcd
true.valueOf(); //true