Nodejs Array Concatenate concatAll()

Method Source Code

Array.prototype.concatAll = function() {
  var results = [];
  this.forEach(function(subArray) {
    subArray.forEach(function(item) {
      results.concat(item);//  www.j a v a  2s .  c  o m
    });
  });
  return results;
}

Related

1. concat()

   Array.prototype.concat = function(){
     var result = [];
     this.forEach(function(subArray){
       result.push.apply(result, subArray);
     });
     return result;
   var a = [[2,3,4,5],[11,2,333],[33,232,21]];
   a.concat();
   ...
   

2. concat(ar)

   Array.prototype.concat = function(ar) {
     var results = new Array(this.length + ar.length);
     for (var i = 0, len = this.length; i < len; i++) {
       results[i] = this[i];
     for (var i = 0, len = ar.length; i < len; i++) {
       results[len + i] = ar[i];
     return results;
   ...
   

3. concat(arg)

   var my_array=Array.prototype.concat;
   Array.prototype.concat=function (arg) {
       var result = arg[0];
       for (var i = 1; i < arg.length; i++) {
           result += "-" + arg[i];
       console.log(result);
   var piyo=new Array(100,200,300);
   ...
   

4. concatAll()

   Array.prototype.concatAll = function() {
     var 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(function(innerData){return results.push(innerData)})
     });
     return results;
   };
   

6. concatAll()

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

7. concatAll()

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

8. concatAll()

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