how to stop js execution with function inside another function

Question

I'm trying to stop the js execution if the validate function returns false. However, if it's false, the script doesn't stop and I can se the message "This will run??" - Would someone give me a hint as to why calling the validate() function inside submit() doesn't work? What's wrong here? Thanks in advance.

// validate name
function validate(name){
    if(name.length < 1){
        console.log('false - length: ' + name.length);
        return false;
    }
}

// submit function
function submit(){
    var name = '';

    // if name is empty, the script should stop.
    validate(name);

    console.log("This will run??");
    return true;
}

submit();

It does work. It just doesn't do what is incorrectly expect: return only applies to the function body it appears in. — user2864740
– user2864740, Commented Jun 29, 2016 at 1:57
you want if (!validate(name)) return false; And you also need to return true at the end of validate when the check passes. — Thilo
– Thilo, Commented Jun 29, 2016 at 2:00

mkoryak · Accepted Answer · 2016-06-29 02:03:31Z

3

function validate(name){
  if(name.length < 1){
      console.log('false - length: ' + name.length);
      return false;
    }
  return true;
}

your validate function should return true (otherwise it returns undefined, which is falsy)

function submit(){
    var name = '';

  // if name is empty, the script should stop.
  if(validate(name)) {
    console.log("This will run??");
    return true;
  } else {
    return false;
  }
}

answered Jun 29, 2016 at 2:03

mkoryak

58.1k64 gold badges204 silver badges262 bronze badges

Sign up to request clarification or add additional context in comments.

Collectives™ on Stack Overflow

how to stop js execution with function inside another function

1 Answer 1

Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

Comments

Your Answer

Sign up or log in

Post as a guest

Related