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Anton Korzhuk
12,795 PointsI'm confused. Please help!
Challenge Question: Around line 17, create a function named 'arrayCounter' that takes in a parameter which is an array. The function must return the length of an array passed in or 0 if a 'string', 'number' or 'undefined' value is passed in.
I wrote this function:
```function arrayCounter (array) {
if (typeof array === 'number', 'string', 'undefined') {
return 0;
}
return array.length;
}```
I'm getting back "Bummer! If I pass in an array in to 'arrayCounter' of '1,2,3' I get 0 and not the number 3."
I don't understand why it is inputting what looks like a string '1,2,3' or a set of numbers 1,2,3 when they specify to return 0 if it's a string or numbers. I went back into the lessons to try to find what I'm missing and I can't find anywhere that the way to input an array into an argument is '1,2,3'.
What's wrong with my function? And why is it inputting '1,2,3' as an argument that is supposed to be an array?
Thanks in advance.
2 Answers
Adam Moore
21,956 PointsIt appears you have to set a separate "typeof" test for each, like:
function arrayCounter(array){
if(typeof array === "string" || typeof array === "number" || typeof array === "undefined"){
return 0;
}
return array.length;
}
Anton Korzhuk
12,795 PointsThanks Adam. That worked.