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JavaScript JavaScript Foundations Functions Return Values

Norman Fernandez
Norman Fernandez
11,804 Points

hey guy i need some help here i cannot understand what is my mistake?

someone can explain me my mistake, thanks for read me

<!DOCTYPE html>
<html lang="en">
    <title>JavaScript Foundations: Functions</title>
      html {
        background: #FAFAFA;
        font-family: sans-serif;
    <h1>JavaScript Foundations</h1>
    <h2>Functions: Return Values</h2>

      var string=[1,2,3];
      function arrayCounter(string){
        if(typeof string== "undefined"){
          return 0;
          return string.length;


2 Answers

Erik McClintock
Erik McClintock
45,783 Points


Your conditional is incomplete. The challenge is asking you to make the arrayCounter function return 0 if the typeof the parameter passed in is a string, number, or undefined. Currently, you're only checking if the typeof the parameter is undefined. You need to include checks in that conditional (just use the OR operator [which is: || ] for simplicity) for the typeof your parameter being a string and a number, as well, and then you'll pass!


Norman Fernandez
Norman Fernandez
11,804 Points

thanks i did not know how to use the operator OR it was very helpfu.l