<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Cars</title>
<script>
//每次引用属性started时，都在它前面加上this和句点
//告诉Javascript解释器，你说的是当前对象的属性started
//以免Javascript以为你引用的是一个变量
var fiat = {
make: "Fiat",
model: "500",
year: 1957,
color: "Medium Blue",
passengers: 2,
convertible: false,
mileage: 88000,
started: false,
start: function(){
this.started = true;
},
stop: function(){
this.started = false;
},
drive: function(){
if (this.started){
alert("Zoom, Zoom!");
} else {
alert("You need to start the engine first.");
}
}
};
fiat.drive();
fiat.start();
fiat.drive();
fiat.stop();
</script>
</head>
<body>
</body>
</html>