摘要： 先看下面一段代码： function Machine(ecode, horsepower) { this.ecode = ecode; this.horsepower = horsepower; } function showme() { alert(this.name + " " + this.ecode + " " + this.horsepower); } var machine = new Machine("code1", 15); machine.name = "machine1"; machine.sh 阅读全文