Nodejs Array Intersect intersect(array)

Method Source Code

Array.prototype.intersect = function(array) {
  return this.filter((x) => array.indexOf(x) != -1);
};

Related

1. intersect(ar)

   Array.prototype.intersect = function(ar) {
     var results = [];
     for (var i = 0, len = this.length; i < len; i++) {
       for (var j = 0, len2 = ar.length; j < len2; j++) {
         if (this[i] === ar[j]) {
           var found = false;
           for (var k = 0, len3 = results.length; k < len3; k++) {
             if (ar[j] === results[k]) {
               found = true;
   ...
   

2. intersect(arr)

   Array.prototype.intersect = function (arr) {
     return this.filter(function (el, idx) {
       return arr.indexOf(el) >= 0;
     }).unique();
   };
   

3. intersect(arr, comparer)

   Array.prototype.intersect = function (arr, comparer) {
     comparer = comparer || EqualityComparer;
     return this.distinct(comparer).where(function (t) {
       return arr.contains(t, comparer);
     });
   };
   

4. intersect(array)

   Array.prototype.intersect = function (array) {
       array = Array.isArray(array) ? array : [];
       return this.filter(function (n) {
           return array.indexOf(n) != -1;
       });
   };
   

5. intersect(array)

   Array.prototype.intersect = function(array){
     return(this.filter(function(n){ return array.include(n); }));
   };
   

6. intersect(array)

   Array.prototype.intersect = function(array){
     if(this.length>array.length) return '';
     var equals = true,
         concat = '';
     for(var i = 0; i < this.length-1; i++){
       if(this[i+1] != array[i]){
         equals = false;
         break;
     if(equals){
       concat = this.reduce((acc,k,i) => acc + (i<this.length?k:''), '');
       concat = array.reduce((acc,k,i) => acc + (i>=this.length-1?k:''), concat);
       return concat;
     return '';
   

7. intersect(ary)

   Array.prototype.intersect = function (ary) {
       return this.union(ary).filter(x => this.contains(x) && ary.contains(x));
   };
   

8. intersect(b)

   Array.prototype.intersect = function(b) {
     var array = new Array();
     var ua = this.uniquelize();
     var length = ua.length;
     for (var i = 0; i < length; i++) {
       if (b.inArray(ua[i])) {
         array.push(ua[i]);
     return array;
   };
   

9. intersect(b)

   Array.prototype.intersect = function(b) {
       var flip = {}, res = [];
       for (var i = 0; i < b.length; i++) flip[b[i]] = i;
       for (i = 0; i < this.length; i++)
           if (flip[this[i]] != undefined) res.push(this[i]);
       return res;