Confusing for loop

JavaScript
1

Hey guys,
I’m learning this solution code and don’t understand what stops the for loop from returning more than just the first num making func true (Quote from instructions: “returns the first element in it that passes a ‘truth test’.”).
Won’t the loop keep going till i == arr.length and return every num that answers the condition func(num) == true?

Thanks in advance :slight_smile:

the solution code:

function findElement(arr, func) {
  let num = 0;

  for (var i = 0; i < arr.length; i++) {
    num = arr[i];
    if (func(num)) {
      return num;
    }
  }

  return undefined;
}

Challenge: Finders Keepers

Link to the challenge:

2

I’ve edited your post for readability. When you enter a code block into a forum post, please precede it with a separate line of three backticks and follow it with a separate line of three backticks to make it easier to read.

You can also use the “preformatted text” tool in the editor (</>) to add backticks around text.

Pre-formatted-text
Pre-formatted-text1356×380 401 KB

See this post to find the backtick on your keyboard.
Note: Backticks (`) are not single quotes (’).

3

a return statement when executed will exit from the function and exit a value - only one return statement can execute in a function

1 Like
4

Thank you so much! Your’e very helpful :slight_smile:

5