Why does instanceof return false for some literals?

Question

"foo" instanceof String //=> false
"foo" instanceof Object //=> false

true instanceof Boolean //=> false
true instanceof Object //=>         


        

Answer 1

 typeof(text) === 'string' || text instanceof String; 

you can use this, it will work for both case as

1. var text="foo"; // typeof will work

2. String text= new String("foo"); // instanceof will work