Nodejs Array Find find( func)

Method Source Code

Array.prototype.find = function( func) {
   if( $.isFunction(func) ) {
      for( var i=0; i<this.length; i++ ) {
         var item = this[i];
         if( func(item) == true ) {
            return item;
         }//from  w w w.  ja  va2  s.c o  m
      }
      return null;
   }
   else {
      console.log("Please pass a function when using find","Error");
   }
};

Related

1. find()

   Array.prototype.find = function() {
     if(arguments.length === 0) {
       return CollectionInspect(this);
   };
   

2. find()

   Array.prototype.find = function()
     var result;
       this.each(function(value, index)
       if(iterator.call(context, value, index, this))
         result = value;
         return false;
   ...
   

3. find(callback)

   Array.prototype.find = function(callback) {
      for (var i = 0; i < this.length; i++) {
         if (callback(this[i])) return this[i];
      return undefined;
   

4. find(callback)

   'use strict';
   Array.prototype.find = Array.prototype.find || function(callback) {
     if (this === null) {
       throw new TypeError('Array.prototype.find called on null or undefined');
     } else if (typeof callback !== 'function') {
       throw new TypeError('callback must be a function');
     var list = Object(this);
     var length = list.length >>> 0;
   ...