Common methods of js's new Function()

The first way

 //For functions that create a stringvar test = new Function('arg','console.log(arg+1)');test(2) ; //3// which is equivalent tovar test = function(arg) {console.log(arg + 1);}test(2); // 3

Second way

var test = new Function(arg,'console.log(arg+1)');var arg = 2;test();//3

The third way

We don't even need to explicitly pass arguments to this function.We use the apply method to call it.It automatically sets the context in which the function executes.That's why we can use this.arg inside functions.Here this points to the data object.

var data = {arg:2}var test = new Function('console.log(this.age+1)').apply(data); //3

Source Network Author: Planet Boy