Nodejs Array Flatten flatten()

Method Source Code

Array.prototype.flatten = function(){
   var result = [];
   this.forEach(function(x) {
      result = result.concat(x);/*from  ww  w.ja v  a 2  s .c  o m*/
   });
   return result;
};

Related

1. flatten()

   Array.prototype.flatten = function() {
     var toString = Object.prototype.toString;
     var arrayTypeStr = '[object Array]';
     var result = [];
     var nodes = this.slice();
     var node;
     if (!this.length) {
       return result;
     node = nodes.pop();
     do {
       if (toString.call(node) === arrayTypeStr) {
         nodes.push.apply(nodes, node);
       } else {
         result.push(node);
     } while (nodes.length && (node = nodes.pop()) !== undefined);
     result.reverse();
     return result;
   

2. flatten()

   Array.prototype.flatten = function() {
       var originalArray = this,
           newArray = [],
           i = 0,
           j = 0,
           element,
           temp;
       for (i = 0; i < originalArray.length; i+=1) {
           element = originalArray[i];
   ...
   

3. flatten()

   Array.prototype.flatten = function() {
       var originalArray = this;
       var newArray = [];
       var i = 0;
       var j = 0;
       var element;
       var temp;
       for (i = 0; i < originalArray.length; i+=1) {
           element = originalArray[i];
   ...
   

4. flatten()

   Array.prototype.flatten = function() {
       var resultArray = [];
       innerFlatten(this);
       function innerFlatten(arr) {
           arr.forEach(function(el) {
               if(Array.isArray(el)) {
                   innerFlatten(el);
               } else {
                   resultArray.push(el);
   ...
   

5. flatten()

   var exchanges = [
     [
       {symbol: "JNJ", price: 2030.00, volume:48984}, 
        {symbol: "PWC", price: 4340.00, volume:15985}
     ],
     [
       {symbol: "CISC", price: 4563.00, volume:874651},
       {symbol: "KROG", price: 712.00, volume:8949}
     ]
   ...
   

6. flatten()

   Array.prototype.flatten = function () {
       return this.reduce((p,c) => p.concat(c), [])
   

7. flatten()

   Array.prototype.flatten = function () {
       function flattenArrayOfArrays(array, result) {
           if (!result) {
               result = [];
           for (var i = 0; i < array.length; i++) {
               if (Array.isArray(array[i])) {
                   flattenArrayOfArrays(array[i], result);
               } else {
   ...
   

8. flatten()

   Array.prototype.flatten = function() {
     return this.reduce(function(res, el) {
       if(el.constructor == Array) {
         el.forEach(function(sub_el) {
           res.push(sub_el);
         })
       } else {
         res.push(el);
       return res;
     }, []);
   

9. flatten()

   Array.prototype.flatten = function () {
     var toReturn = [];
     for (var i = 0, len = this.length; i < len; i++) {
       if (this[i] instanceof Array) {
         toReturn = toReturn.concat(this[i].flatten());
       } else {
         toReturn.push(this[i]);
     return toReturn;
   };