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JavaScript JavaScript Foundations Functions Return Values

Posted by Li Xia
Li Xia
4,671 Points

array length

Getting " If I pass in an array in to 'arrayCounter' of '1,2,3' I get 0 and not the number 3." on this code. I'm sure array.length is the right method for getting length of arrays, Help! what am i doing wrong?

function  arrayCounter (array) {
        if (typeof array === 'undefined', 'string', 'number') {
            return 0;
        }
        return array.length;
      }

1 Answer

Gareth Borcherds
Gareth Borcherds
9,372 Points
Gareth Borcherds
Gareth Borcherds
9,372 Points

Your if statement is written incorrectly. Try using:

function  arrayCounter (array) {
if (typeof array == 'undefined' ||  typeof array == 'string' || typeof array == 'number') {
return 0;
}
return array.length;
}

When evaluating more than one condition of a function you must use if (statement1 && or || statement2)

&& and means that both conditions have to be validated to show true. || means that either statement has to be evaluated. You want the or statement in this one.