1function reverseString(s){
2    return s.split("").reverse().join("");
3}
4reverseString("Hello");//"olleH"

1//with built-in method
2let string = "We are going to reverse a string with built-in method.";
3let reversed = string.split("").reverse().join("");
4console.log(reversed);
5
6//with the for loop
7let string = "We are going to reverse a string with the for loop.";
8function reverse (string){
9  let reversed = "";
10  for(let char of string){
11    reversed = char + reversed;
12  }
13  return reversed;
14}
15console.log(reverse(string));
16
17//with the spread operator
18let string = "We are going to reverse a string with the spread operator.";
19let reversed = [...string].reverse().join("");
20console.log(reversed);
21
22//with iteration
23let string = "We are going to reverse a string with iteration.";
24function reverse(string) {
25  for (var reversed = "", i = string.length - 1; i >= 0; i--) {
26    reversed += string[i];
27  }
28  return reversed;
29console.log(reverse(string));

1function reverseString(str) {
2    return str.split("").reverse().join("");
3}
4reverseString("hello");

1function reverseString(str) {
2    var newString = "";
3    for (var i = str.length - 1; i >= 0; i--) {
4        newString += str[i];
5    }
6    return newString;
7}
8reverseString('hello');

1function reverseString(s){
2    return s.split("").reverse().join("");
3}
4reverseString("Hello");//"olleH"

1function reverseString(str) {
2  if (str === "")
3    return "";
4  else
5    return reverseString(str.substr(1)) + str.charAt(0);
6}
7reverseString("hello");