Nodejs Array Contain contains(val)

Method Source Code

#!/usr/bin/js// w ww .j a v a 2s.c o  m

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))

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;
   };
   

2. contains(v)

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

3. contains(v)

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

4. 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++) {
   ...
   

5. 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++) {
   ...
   

6. contains(value)

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

7. contains(value)

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

8. contains(value)

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

9. contains(value)

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