how to reverse a sting in javascript code example

Example 1: javascript reverse a string

function reverseString(s){
    return s.split("").reverse().join("");
}
reverseString("Hello");//"olleH"

Example 2: reverse a string program in javascript

function reverseString(str) {
    var newString = "";
    for (var i = str.length - 1; i >= 0; i--) {
        newString += str[i];
    }
    return newString;
}
reverseString('hello');