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      var obj = {a:10}; function copy(obj){ var newobj = {}; for ( var attr in obj) { newobj[attr] = obj[attr]; } return newobj; } var obj2 = copy(obj); obj2.a = 20; alert(obj.a); //10 var obj = {a:{b:10}}; function copy(obj){ var newobj = {}; for ( var attr in obj) { newobj[attr] = obj[attr]; } return newobj; } var obj2 = copy(obj); obj2.a.b = 20; alert(obj.a.b); //20 var obj = {a:{b:10}}; function deepCopy(obj){ if(typeof obj != 'object'){ return obj; } var newobj = {}; for ( var attr in obj) { newobj[attr] = deepCopy(obj[attr]); } return newobj; } var obj2 = deepCopy(obj); obj2.a.b = 20; alert(obj.a.b); //10 草莓视频下载网站天下知农大樱桃修剪视频全部孕妇毛片丰满孕妇孕交超碰在线观 再深点灬舒服灬太大了添动视频 三级黄色视频在线观看 老子影院午夜伦不卡国语 久久综合久久综合久