reverse the words in an array javascript code example

Example 1: javascript reverse string

function reverseString(str) {
    return str.split("").reverse().join("");
}
reverseString("hello");

Example 2: javascript reverse string

function reverseString(str) {
  if (str === "")
    return "";
  else
    return reverseString(str.substr(1)) + str.charAt(0);
}
reverseString("hello");