数组合并去重

gistfile1.js

var _user01 = [
			{'id': '11', 'name': 'fame'},
			{'id': '11'},
			{'id': '22'}
		]

		var _user02 = [
			{'id': '11', 'name': 'fame', 'sex': 'famle'},
			{'id': '11', 'sesd':'2343'},
			{'id': '22'},
			{'id': '2332','name': 'se'}
		]




		Array.prototype.unique = function(source,compareFn){
		      var _length =source.length,
			      result =source.slice(0), //clone source
				  i,_item;
			  // if compareFn is not function we will build one 	  
		      if('functrion' != typeof compareFn){
			     compareFn = function(item1,item2){
				    return item1 === item2;
				 };
			  }
			  //we use double circulation to compare the items 
			  while (--_length >0){
		         _item = result[_length];     // start from the last 
		         i = _length;
		         while(i --){
		            if(compareFn(_item,result[i])){
					   result.splice(_length,1);
					   break;
					}
				 }		 
			  }
			  return result;
		};

		console.log(_user01.unique(_user02))