Is it possible to use eval to exit a function?

Question

I have a code similar to this.

function foo(script) {
  console.log(1);
  
  if(script) {
    eval(script);
  }
  
  console.log(2);
}

foo(/* Some expression */);

console.log(3);

I want it to print 1 and 3 but skip 2.

---

I tried

foo('return');

It doesn't work.

---

Also I tried

foo('throw new Error()')

But it skips 3 as well.

---

So is it possible to exit that function via eval?

Answer 1

The throw new Error() expression will work, but you will need to wrap eval(script) and all your subsequent logic inside a try/catch block:

function foo(script) {
  console.log(1);
  
  try {
    if (script) {
      eval(script);
    }
    
    console.log(2);
  } catch(e) { }
}

foo('throw new Error()');

console.log(3);