javascript - Executing Code in code?

Question

I just wanted to ask, it this possible to execute javascript code from user input? For example: User enters his Javascript code in <textarea id="test"> . Then with JavaScript i get his input with var userInput = $('#test').val(); . And is it possible to execute javascript code from that string? If it is possible, please tell me how.

~Regards

Answer 1

There are two ways to do this with the eval() function:

eval(userInput);

or by creating a function and then invoking it.

var fun = new Function(userInput);
fun.apply(window);