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

Answer 1

To continue using the code after validation, I use the following example:

var validCode = 1;
try {
  eval( jsCode );        /* Code test */
} catch (e) {
  if (e instanceof SyntaxError) {
    validCode = 0;
    console.warn(e.message);
  }
} finally {
  if(validCode){
    "do some magic"
  }
}