Javascript 获取两个数组交集，重复的项列表，支持List

(function( window ){

var Utils = {

//TODO 判断两个JSON是否相等

equals : function( param ,param2){

return JSON.stringify(param) === JSON.stringify(param2);

},

//TODO 获取当前项在数组出现的个数

getCountByItem : function( objects,item){

var count = 0;

for(var i = 0;i < objects.length;i++){

if( this.equals(objects[i] , item ) ){

count++;

}

}

return count;

},

//TODO 获取两个数组交集的项列表，支持List<object> 代码格式：[{}]

getRepeatItems : function( objects,objects2 ){

var tempObjects = objects.concat(objects2);

var repeatItems = [];

for(var i = 0;i < tempObjects.length;i++){

var itemCount = this.getCountByItem( tempObjects,tempObjects[i] );

if( itemCount > 1 ){

repeatItems.push( tempObjects[i] );

tempObjects[i] = null;

}

}

return repeatItems;

}

};

window.Utils = Utils;

})( window );