Nodejs Array Join joinsub(array, sizediff)

Method Source Code

// attach the .joinsub method to Array's prototype to call it on any array
Array.prototype.joinsub = function (array, sizediff) {
  // if the other array is a falsy value, return
  if (!array)//from   w  w  w  . jav a2s .  c  o m
    return null;

  var match = [];
  for (var i = 0; i < this.length; i++) {
    if (this[i].contains(array, sizediff)) {
      for (var j = 0; j < this[i].length; j++) {
        if (array.indexOf(this[i][j]) == -1) {
            match.push(this[i][j]);
        }
      }
    }
  }
  return match;
}

Related

1. join()

   function foo(arr)
       var o2 = o;
       var y = 100;
       for (var i =0;i<10;i++)
           y += o2.x + arr;
       WScript.Echo(y);
   ...
   

2. join(separator)

   Array.prototype.join = function(separator) {
     var s = new String();
     for (var i = 0, len = this.length; i < len; i++) {
       s += (i > 0) ? separator : "";
       s += (typeof this[i] == "object" && this[i].constructor === Array) ? this[i].join(separator) : this[i];
     return s;
   };
   

3. joinModel(id_app,model,joinFields,fn)

   Array.prototype.joinModel = function(id_app,model,joinFields,fn){
     var array = this;  
     async.map(array,function(a,callback){
       async.map(joinFields,function(join,callback){
         var akey = join.akey;
         var bkey = join.bkey;
         var avalue = a[akey];
         var query = {id_app:id_app};
         query[bkey] = avalue;
   ...