Are eval() and new Function() the same thing?

Question

Are these two functions doing the same thing behind the scenes? (in single statement functions)

var evaluate = function(string) {
    return eval(\'(\' + str         


        

Answer 1

Just want to point out some syntax used in the examples here and what it means:

 var func = function(string) {
     return (new Function( 'return (' + string + ')' )());
 }

notice that the Function(...)() has the "()" at the end. This syntax will cause func to execute the new function and return the string not a function that returns string, but if you use the following:

 var func = function(string) {
     return (new Function( 'return (' + string + ')' ));
 }

Now func will return a function that returns a string.