Nodejs Array Contain contains(value)

Method Source Code

"use strict";/*from   w w w.  java2s.c  o  m*/

Array.prototype.contains = function(value){
   var n = this.length
   for (var i = 0; i < n; i++){
      if (this[i] == value) return true
   }
   return false
}

Related

1. contains(val)

   #!/usr/bin/js
   arr = [1, 2, 3, 4, 5];
   Array.prototype.contains = function (val) {
     for (var i = 0; i < this.length; i++){
       if (this[i] === val){
         return true;
   console.log(arr.contains(3))
   

2. contains(value)

   Array.prototype.contains = function(value) {
     return this.indexOf(value) > -1;
   };
   

3. contains(value)

   Array.prototype.contains = function (value){
       return this.indexOf(value)>=0
   };
   

4. contains(value)

   Array.prototype.contains = function(value) {
       return Array.prototype.indexOf.call(this, value) !== -1;
   };
   

5. contains(value)

   Array.prototype.contains = function(value) {
       return (this.indexOf(value) > -1);
   

6. contains(value)

   Array.prototype.contains = function(value) {
     return this.indexOf(value) !== -1;
   };
   Array.prototype.remove = function(value) {
     var index = this.indexOf(value);
     if ( index !== -1 ) {
       this.splice(index, 1);
   };
   ...
   

7. contains(value)

   Array.prototype.contains = function(value) {
     for(var i=0; i < this.length; i++) {
       if(this[i] === value)
             return true;
     return false;
   };
   

8. contains(what)

   Array.prototype.contains = function (what) {
     var contains = false;
     if (typeof what !== 'function') {
       this.forEach(function (item) {
         if (contains) return;
         contains = (item === what);
       });
       return contains;
     this.forEach(function (item) {
       if (contains) return;
       contains = what(item);
     });
     return contains;
   };
   

9. contains(x)

   Array.prototype.contains=function(x){
    for(i in this){
      if((x.city==this[i].city || x.firstName==this[i].firstname || x.lastName==this[i].lastname))
        return true;
    return false;