javascript - Creating a function to go through an array and if it finds a specific numeric value it returns true

Question

I'm creating a function to sort through an array to return a boolean indicating whether or not the number 7 is anywhere in the array.

Reading my code out loud I feel like it should do exactly what I am asking it to do. Although I fully realize I am a beginner and I'm going to make mistakes. I cannot figure this one out.

If I input includesSeven([1, 7, 8, 10]); this should return true, however I am getting false as my return

function includesSeven(array) {
  for (var i = 0; i <= array.length; i++) {
    if (array[i] === 7) {
      return true;
    } else {
      return false;
    }
  };
};

EDIT: I do apologize for the image and not the code.

My code for this:

question from:https://stackoverflow.com/questions/65947769/creating-a-function-to-go-through-an-array-and-if-it-finds-a-specific-numeric-va

Answer 1

function includesSeven(array){
    for(var i = 0; i < array.length; i++){
        if(array[i] == 7){
            return true;
        }
    }
    return false;

}

in your original code, you were essentially just checking the first number in the array, you should return false after the for loop has completed.

while iterating through the array, if it finds the number 7, itll return true. once its all completed, its safe to assume that the number 7 isnt in the array, so you can just return false.