Functions Challenge task 1 of 1

The Instructions state to create a function that takes in an input and returns 0 if it is either a string, a number or an undefined value. If the input is an array it should return it's length;

Step 1:

Create the function with a parameter. In this case I have chosen 'item'.

function arrayCounter(item){

  //Empty function

}

Step 2:

Check to see if the 'item' is an array or not. I will use the typeof operator in order to identify a string, a number or a an undefined value. if the value is an array I will simply return it's length using the length method otherwise I will simply return the number 0.

//Final Function

function arrayCounter(item){

        if(typeof item === "string" || typeof item === "number" ||typeof item ===  "undefined")
        {
          return 0; 
        }else
        {
          return item.length;
        }
  }

Hope this helped. Happy programming. Have a good day.

What are these signs | | that you're using? I haven't learned these yet.

This is probably why I'm having trouble with this. I haven't even learned this yet. I really appreciate your help. Thank you.

So in short, the program, in english would simply state:

If the item's "type" is a string OR(||) a number OR(||) an undefined value then return 0.

I really appreciate your help. Thank you man!