Nodejs Array In inArray(comparer)

Method Source Code

// check if an element exists in array using a comparer function and return true/false
// comparer : function(currentElement)
Array.prototype.inArray = function(comparer) { 
    for(var i=0; i < this.length; i++) { 
        if(comparer(this[i])) return true; 
    }//from  w  ww  .  j  a  va2 s.c o m
    return false; 
};

Related

1. in(elementToFind)

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

2. inArr(item)

   Array.prototype.inArr = function (item){
       for (var i = 0; i < this.length; i++){
           if(this[i] === item){
               return true;
   

3. inArray()

   Array.prototype.inArray = function() {
       for(var j in this) {
           if(this[j] == arguments[0]) {
               return true;
       return false;
   

4. inArray()

   Array.prototype.inArray = function()
     for (var j in this) { 
       if (this[j] == arguments[0]) { 
         return true;
     return false;     
   

5. inArray(comparer)

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

6. inArray(comparer)

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

7. inArray(comparer)

   Array.prototype.inArray = function(comparer) {
     for (var i = 0; i < this.length; i++) {
       if (comparer(this[i])) return true;
     return false;
   };
   Array.prototype.pushIfNotExist = function(element, comparer) {
     if (!this.inArray(comparer)) {
       this.push(element);
   ...
   

8. inArray(comparer)

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

9. inArray(e)

   Array.prototype.inArray = function(e) {
       for (var i in this){
           if (this[i]===e) return true;
       return false;