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JavaScript

Posted by Rasmus Brokhattingen
Rasmus Brokhattingen
6,108 Points

Confused about jQuery

A function can return true or false. So how can the following code: 

function isPasswordValid() {
  return $password.val().length > 8;
}

Be used in the below code? 

function passwordEvent(){
     //Find out if password is valid
    if(isPasswordValid()) {
    //Hide hint
      $password.next().hide();
    } else {
    //Else show hint
      $password.next().show();
    }
}

passwordEvent() has an if or else execution inside of it. But if isPasswordValid() returns true in the first function, how does passwordEvent() recognize that and execute the else function?.

2 Answers

Maciej Czuchnowski
Maciej Czuchnowski
36,441 Points
Maciej Czuchnowski
Maciej Czuchnowski
36,441 Points

This is not the full code, so I'm just guessing here, but I think that passwordEvent runs every time you enter or remove a character in the password field. Every time it runs, it checks the if/else statement. And every time the if/else statement runs, it evaluates the isPasswordValid function and gets true or false returned.

Rasmus Brokhattingen
Rasmus Brokhattingen
6,108 Points
Rasmus Brokhattingen
Rasmus Brokhattingen
6,108 Points

That answered my question, thank you very much!