Given a string describing a Javascript function, convert it to a Javascript function

Question

Say I\'ve got a Javascript string like the following

var fnStr = \"function(){blah1;blah2;blah3; }\" ;

(This may be from an expression the

Answer 1

You can do this:

//in your case: eval("var fn = " + fnStr);
eval("var fn = function(){ blah1;blah2;blah3; }"); 
fn();

Not sure how to get it much simpler, sometimes there's no (better) way around eval(). Here's a quick example of this in action.