Nodejs Array All Predicate allItemsAre(xAndY)

Method Source Code

//Tests all items in array according to predefined function.
//call like this:
//myArray.allItemsAre(function(item)){return item.x is something && item.y is something;}
////from   w  w w  .j  av  a2 s. c  o m
Array.prototype.allItemsAre = function(xAndY){
   for(var i = 0; i < this.length; i++)
   {
      if(!xAndY(this[i])){
         return false;
      }
   }
   return true;
}

Related

1. all(p)

   Array.prototype.all = function (p) {
     for(let el of this){
       if(!p(el)) {return false;}
     return true;
   };
   

2. all(p)

   Array.prototype.all = function (p) {
     return (this.filter(p).length === this.length);
   };
   Array.prototype.none = function (p) {
     return (this.filter(p).length === 0);
   };
   Array.prototype.any = function (p) {
     return (this.filter(p).length > 0);
   };
   ...
   

3. all(p)

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

4. all(predicate)

   Array.prototype.all = function(predicate){
     for (var i = 0; i < this.length; i++){
       if (!predicate(this[i])) {
         return false
     return true
   

5. all(predicate, context)

   Array.prototype.all = function (predicate, context) {
     context = context || window;
     predicate = predicate || Predicate;
     var f = this.every || function (p, c) {
       return this.length == this.where(p, c).length;
     };
     return f.apply(this, [predicate, context]);
   };
   

6. allItemsAre(xAndY)

   Array.prototype.allItemsAre = function(xAndY){
        for(var i = 0; i < this.length; i++)
       if(!xAndY(this[i])){
         return false;
     return true;