difference between Function and new Function

Question

I sometimes see people doing this Function(\'alert(\"hi\")\') and sometimes they do new Function(\'alert(\"hi\")\')

Is there a difference b

Answer 1

Invoking the Function constructor as a function (without using new operator) has the same same effect as invoking it as constructor.

That means it is same to code if you do it:

var result1 = new Function('a', 'b', 'return a + b')
var result2 = Function('a', 'b', 'return a + b')

result1 and result2 are same.