Nodejs Array Contain contains(value)

Method Source Code

// Returns a boolean indicating whether an array has any matching value to the first argument specified

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

Related

1. contains(v)

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

2. contains(v)

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

3. 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))
   

4. contains(value)

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

5. contains(value)

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

6. contains(value)

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

7. contains(value)

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

8. 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);
   };
   ...
   

9. contains(value)

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