javascript array split reverse code example

Example 1: javascript string reverse

"this is a test string".split("").reverse().join("");
//"gnirts tset a si siht"

// Or
const reverse = str => [...str].reverse().join('');

// Or
const reverse = str => str.split('').reduce((rev, char)=> `${char}${rev}`, '');

// Or
const reverse = str => (str === '') ? '' : `${reverse(str.substr(1))}${str.charAt(0)}`;

// Example
reverse('hello world');     // 'dlrow olleh'

Example 2: reverse a string javascript

//with built-in method
let string = "We are going to reverse a string with built-in method.";
let reversed = string.split("").reverse().join("");
console.log(reversed);

//with the for loop
let string = "We are going to reverse a string with the for loop.";
function reverse (string){
  let reversed = "";
  for(let char of string){
    reversed = char + reversed;
  }
  return reversed;
}
console.log(reverse(string));

//with the spread operator
let string = "We are going to reverse a string with the spread operator.";
let reversed = [...string].reverse().join("");
console.log(reversed);

//with iteration
let string = "We are going to reverse a string with iteration.";
function reverse(string) {
  for (var reversed = "", i = string.length - 1; i >= 0; i--) {
    reversed += string[i];
  }
  return reversed;
console.log(reverse(string));