Nodejs Array Equal equals(array)

Method Source Code

Array.prototype.equals = function(array) {
  if (!array)//w w w  . ja  v  a  2  s .c o  m
    return false;

  if (this.length !== array.length)
    return false;

  return this.every((x, i) => x === array[i]);
};

const a1 = [1,2,3];
const a2 = [1,2,3];

maxCount = 100;

console.log(a1.equals(a2));

Related

1. equals(arr)

   Array.prototype.equals = function (arr) {
     const len = this.length
     if (len !== arr.length) {
       return false
     for (let i = 0; i < len; i++) {
       if (this[i] !== arr[i]) {
         return false
     return true
   const a = [1, 2].equals([1, 2]) 
   const b = [1, 2].equals([0]) 
   console.log(a, b)
   

2. equals(arr)

   Array.prototype.equals = function(arr) {
     const len = this.length
     if (len !== arr.length) {
       return false
     for (let i = 0; i < len; i++) {
       if (this[i] !== arr[i]) {
         console.log(222,this[i])
         return false
   ...
   

3. equals(arr)

   "use strict";
   var pairToCoords = function pairToCoords(pair) {
     return { x: pair[0], y: pair[1] };
   };
   var coordsToPair = function coordsToPair(coords) {
     return [coords.x, coords.y];
   };
   coordsToPair(pairToCoords([1, 2])); 
   pairToCoords(coordsToPair({ x: 1, y: 2 })); 
   ...
   

4. equals(arr)

   Array.prototype.equals = function (arr) {
     if (this.length != arr.length) return false;
     return this.reduce(function (acc, el, i) {
     if (_.isArray(el)) return acc && el.equals(arr[i]);
     return acc && el === arr[i];
   }, true)};
   

5. equals(arr)

   Array.prototype.equals = function(arr) {
     if(!this || !arr) {
       return false
     if(this.length != arr.length) {
       return false
     for(i = 0; i < arr.length; i++) {
       if (this[i] != arr[i]) {
   ...
   

6. equals(array)

   Array.prototype.equals = function (array) {
       for(var i = 0; i < this.length; i++){
           if(this[i] != array[i]){
               return false;
       return true;
   

7. equals(array)

   Array.prototype.equals = function (array) {
       if (!array)
           return false;
       if (this.length != array.length)
           return false;
       for (var i = 0, l=this.length; i < l; i++) {
           if (this[i] instanceof Array && array[i] instanceof Array) {
               if (!this[i].equals(array[i]))
                   return false;
   ...
   

8. equals(array)

   Array.prototype.equals = function (array) {
       if (!array){
           return false;
       if (this.length != array.length){
           return false;
       for (var i = 0, l=this.length; i < l; i++) {
           if (this[i] instanceof Array && array[i] instanceof Array) {
   ...
   

9. equals(array)

   Array.prototype.equals = function (array) {
       if (!array) return false;
       if (this.length != array.length) return false;
       for (var i = 0, l = this.length; i < l; i++) {
           if (this[i] instanceof Array && array[i] instanceof Array) {
               if (!this[i].equals(array[i])) {
                   return false;
           } else if (this[i] != array[i]) {
   ...