Nodejs Array Concatenate concatAll()

Method Source Code

Array.prototype.concatAll = function() {
   var results = [];
   this.forEach(function(subArray) {
      subArray.forEach((i) => {/*from ww  w  .  j  a  va  2s . c  om*/
      results.push(i);
    });
   });

   return results;
};

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

Related

1. concatAll()

   Array.prototype.concatAll = function() {
       let result = [];
       this.forEach(items => 
           result = result.concat(items)
       );
       return result;
   

2. concatAll()

   Array.prototype.concatAll = function() {
     let results = [];
       for (let i = 0; i < this.length; i++) {
           results.push.apply(results, this[i]);
     return results;
   };
   

3. concatAll()

   Array.prototype.concatAll = function() {
     return this.reduce((results, current) => {
       if(Array.isArray(current)) {
           return results.concat(current).concatAll();
       } else {
           return (results.push(current), results);
     }, []);
   };
   ...
   

4. concatAll()

   Array.prototype.concatAll = function() {
     var results = [];
     this.forEach(function(subArray) {
       if (Array.isArray(subArray)) {
         subArray.forEach(function(item) {
           results.push(item);
         });
     });
   ...
   

5. concatAll()

   Array.prototype.concatAll = function () {
     let results = [];
     this.forEach(function (subArray) {
       results.push.apply(results, subArray);
     });
     return results;
   };
   

6. concatAll()

   let data = [
       [
           {name: "IBM", price:12},
           {name: "Apple", price:120}        
       ],
       [
           {name: "Google", price:100},
           {name: "MorganStanley", price:30}        
       ]
   ...
   

7. concatAll()

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

8. concatAll()

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

9. concatAll()

   let exchanges = [
     [
       { symbol: 'XFX', price: 240.22, volume: 23432 },
       { symbol: 'TNZ', price: 332.19, volume: 234 },
     ],
     [
       { symbol: 'JXJ', price: 120.22, volume: 5323 },
       { symbol: 'NYN', price: 88.47, volume: 98275 },
     ],
   ...