Nodejs Array Concatenate concatAll()

Method Source Code

let data = [//w  w w.jav a 2s.c om
    [
        {name: "IBM", price:12},
        {name: "Apple", price:120}        
    ],
    [
        {name: "Google", price:100},
        {name: "MorganStanley", price:30}        
    ]
]
Array.prototype.concatAll = function () {
    let results = [];
    
    this.forEach(function(item){
        item.forEach(function(subItem){
            results.push(subItem);
        })
    })
    return results;
}
data.concatAll().forEach(function(item){
    console.log("==== concatAll: " + JSON.stringify(item));
})

Related

1. concatAll()

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

2. 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);
     }, []);
   };
   ...
   

3. concatAll()

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

4. concatAll()

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

5. concatAll()

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

6. concatAll()

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

7. concatAll()

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

8. 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 },
     ],
   ...
   

9. concatAll()

   var exchanges = [
       [
           {symbol: "XFZ", price: 340.22, volume: 202373},
           {symbol: "ABC", price: 521.19, volume: 737323}
       ],
       [
            {symbol: "DEF", price: 987.82, volume: 2373},
            {symbol: "HIJ", price: 200.82, volume: 373}
       ]
   ...