I want to know how can i turn string into a wrap function.
I have a string function data
var a = new String("alert(turned)");
And I want to turn a into a wrapped function
a = function(){ a }; // failed
a = function(){ eval(a) }; // failed
var b = a;
a = function(){ eval(b) } // success
I want to know what do people will do in general to turn a into a wrapped function.
Thank you very much for your advice.
You can also use the function constructor with the new keyword like this.
var a = new String("alert('hello')");
a = new Function(a)
a()
Would result in an alert box with 'hello'
You can even make a new function using this method which accepts arguments. see here https://developer.mozilla.org/en-US/docs/JavaScript/Reference/Global_Objects/Function
But I would be careful about what you turn into a function. You don't want users to be able to execute code.
var a = eval (" return function() { alert('yo')}; ");
But don't
