eval javascript, check for syntax error

Question

I wanted to know if it is possible to find through javascript if a call to eval() has a syntax error or undefined variable, etc... so lets say I use eval for some arbitrary javascript is there a way to capture the error output of that eval?

Answer 1

You can test to see if an error is indeed a SyntaxError.

try {     eval(code);  } catch (e) {     if (e instanceof SyntaxError) {         alert(e.message);     } }