Javascript对象继承(原型继承法)
http://extjs.org.cn/node/407 (转)
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title></title>
<script type="text/javascript">
function dw(s) {
document.write(s + "<br />");
}
//警察
function PoliceMan() {
var m_lifeEnergy = 100;
this.getLifeEnergy = function () {
return m_lifeEnergy;
}
this.Shot = function () {
m_lifeEnergy -= 1;
}
this.Repair = function() {
m_lifeEnergy += 1;
}
}
//超级警察
function SuperPoliceMan() {
this.Flight = function() {
}
}
SuperPoliceMan.prototype = new PoliceMan();
//创建一个超级警察
var pm = new SuperPoliceMan();
//显示当前生命值
dw(pm.getLifeEnergy());
//中枪生命值减1
pm.Shot();
//显示当前生命值
dw(pm.getLifeEnergy());
//飞离地面
pm.Flight();
//自我修复
pm.Repair();
//显示当前生命值
dw(pm.getLifeEnergy());
</script>
</head>
<body>
</body>
</html>
