function displayInfo(args){ var output = ""; if(typeof args.name == "string"){ output ＋= "Name:" + args.name + "\n"; } if(typeof args.age == "number"){ output ＋= "Age:" + args.age + "\n"; } alert(output); } displayInfo({ name:"Nicholas", age:29 }) displayInfo({ name:"Greg" })１．為什么這里把 output ＋= "Name:" + args.name + "n"; output ＋= "Age:" + args.age + "n";的 ＋＝ 變成?。〗Y(jié)果會不一樣?。玻畍ar output = ""; 在這里有什么含義
關(guān)于＋和＋＝的問題
慕虎7371278
2018-12-27 22:15:12
