javascript .split().reverse.join

"this is a test string".split("").reverse().join("");
//"gnirts tset a si siht"
//as a function
function reverseString(string){
return string.split("").reverse().join("");}
reverseString("test string");
//"gnirts tset"function reverseString(str) {
    return str.split("").reverse().join("");
}
reverseString("hello");//more compact way: 
"my example text".split("").reverse().join("");"this is a test string".split("").reverse().join("");function reverseString(s){
    return s.split("").reverse().join("");
}
reverseString("Hello");//"olleH"