Nodejs String Reverse reverse()

Method Source Code

/**//from  w ww .j a v  a2s  .  com
 * Question from http://www.thatjsdude.com/interview/js1.html#string_reverse
 * How would you reverse a string in JavaScript?
 */

// attempt 1
function reverseString(str) {
   var rstr = [];

   var splitStr = str.split('');

   for (i = splitStr.length -1; i >= 0; i--) {
      rstr.push(splitStr[i]);
   }

   return rstr.join('');
}

console.log(reverseString('myTest'));


// attempt 2
function reverseStringRecursive(str) {

   if (str.length <= 1) {
      return str;
   }
   var a = str.split('')
   return a.pop() + reverseStringRecursive(a.join(''));
}

// easy way w/ using built in functions
function reverseStringEasy(str) {
   return str.split('').reverse().join('');
}

// add to String primitive wrapper prototype
String.prototype.reverse = function() {
   return this.split('').reverse().join('');
}

Related

1. reverse()

   String.prototype.reverse = function(){
     var newString = "";
     for (var i = this.length - 1; i >= 0; i--) {
       newString = newString + this[i];
     };
     return newString;
   var name = "freak yeah I\'m writing strings up in hurr!!"
   name.reverse();
   ...
   

2. reverse()

   String.prototype.reverse = function(){
     var returnedString = string.split('');
     returnedString.reverse();
     var string = this.join('');
   };
   String.prototype.reverse = function(){
     return this.split('').reverse().join('');
   var test = 'Cruncha muncha cruncha muncha fritos in my butt';
   ...
   

3. reverse()

   String.prototype.reverse = function() {
       var s = this;
       var o = '';
       for (var i = s.length - 1; i >= 0; i--)
           o += s[i];
       return o;
   var fs  = require("fs");
   fs.readFileSync(process.argv[2]).toString().split('\n').forEach(function (line) {
   ...
   

4. reverse()

   String.prototype.reverse = function() {
     var reverse = '';
     for (var i = this.length - 1; i >= 0; i--){
       reverse += this[i]
     return reverse;
   };
   

5. reverse()

   String.prototype.reverse = function()
     var s = '';
     var i = this.length;
     while (i > 0) {
       s += this.substring(i-1,i);
       i--;
     return s;
   ...
   

6. reverse()

   String.prototype.reverse = function() {
     var splitext  = this.split("");
     var revertext = splitext.reverse();
     var reversed  = revertext.join("");
     return reversed;
   };
   

7. reverse()

   String.prototype.reverse = function() {
     return this.split("").reverse().join("");
   

8. reverse()

   String.prototype.reverse = function () {
       return Array.prototype.reverse.apply(this.split('')).join('');
   };
   console.log('bumblebee'.reverse());
   

9. reverse()

   let testString = 'hello';
   let expectedString = 'olleh';
   String.prototype.reverse=function(){
     return this.split("").reverse().join("");
   console.log(testString.reverse() === expectedString);