对象奔驰E2000
<script> window.onload = function (ev) { // 调用对象前先创建 // 2 var vcar=new Car("奔驰","E2000",50,2); // 3 vcar.startup(); vcar.Startengine(); vcar.changeSpeed(); vcar.swerve(); vcar.stop(); vcar.Turnofftheengine(); } //1 function Car(make, model, currentSpeed, displacement) { // this.make = "奔驰"; // this.model = E2000; var currentSpeed = currentSpeed; // this.displacement = 2; //启动引擎 this.Startengine = function () { var speed =currentSpeed; document.write("<br>"+"启动引擎:"+speed); }; //启动 this.startup = function () { document.write("启动:0"); }; //加速 this.changeSpeed = function () { var speed =currentSpeed*2; document.write("<br>"+"加速:"+speed); ///return speed; }; // car.changeSpeed(); //转向 this.swerve = function () { var speed =currentSpeed/5*2; document.write("<br>"+"转向:"+speed); }; //刹车 this.stop = function () { var speed =0; document.write("<br>"+"刹车:"+speed); }; //关闭引擎 this.Turnofftheengine = function f() { var speed =currentSpeed/5/2; document.write("<br>"+"关引擎:"+speed); }; } </script>