Nodejs Array Merge All mergeAll()

Method Source Code

Array.prototype.mergeAll = function() {
   var results = [];
   this.forEach(function(subArray) {
      subArray.forEach(function(number) {
         results.push(number);//from w w w  . ja va2 s  .  c  o  m
      });
   });
   return results;
};

var result = JSON.stringify([ [1,2,3], [4,5,6], [7,8,9] ].mergeAll());
console.log(result);
console.log(result === "[1,2,3,4,5,6,7,8,9]");
// [1,2,3].mergeAll(); // throws an error because this is a one-dimensional array

Related

1. mergeAll()

   var school = [
     [1, 2, 3],
     [4, 5, 6, 7, 8, 3],
     [5, 3, 5]
   ];
   Array.prototype.mergeAll = function() {
     var result = [];
     this.forEach(function(subArray) {
       result.push.apply(result, subArray);
   ...
   

2. mergeAll()

   Array.prototype.mergeAll = function() {
       var results = [];
       this.forEach(function(subArray) {
       subArray.forEach(function(element) {
         results.push(element);
       });
       });
       return results;
   };
   ...
   

3. mergeAll()

   Array.prototype.mergeAll = function() {
       var results = [];
       this.forEach(function(subArray) {
         subArray.forEach(function(itemInArray) {
           results.push(itemInArray);
         });
       });
       return results;
   };
   ...
   

4. mergeAll()

   Array.prototype.mergeAll = function(){
     var result = [];
     this.forEach(function(subArray){
       subArray.forEach(function(item){
         result.push(item);
       })
     })
     return result;
   

5. mergeAll()

   Array.prototype.mergeAll = function(){
     var result = [];
     this.forEach(function(subArray){
       subArray.forEach(function(item){
         result.push(item);
       })
     })
     return result;
   var a = [[1,2],[3,4]];
   a.mergeAll();