prototype.js之bind及js apply call用法

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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312" />
<title>prototype test</title>
<script src="../jscommon/js/core/prototype.js"></script>
</head>

<body>js bind method test:
<script language="javascript">
var Cat = Class.create();
Cat.prototype = {
initialize:function(name){
this.name = name;
},
show:function(){
alert('mao!!!');
}
}
var Dog = Class.create();
Dog.prototype = {
initialize:function(name){
this.name = name;
},
run:function(){
alert("run!!!");
}
}

var cat1 = new Cat("cat1");
cat1.show();
var dog1 = new Dog();
run1 = dog1.run.bind(cat1);
run1();
show2 = cat1.show.bind(dog1);
show2();

function a(a,b){
alert("a method invoked!!!"+(a+b));
}
function b(){
var a = 0;
}

var b1 = new b();
a.apply(b1,[1,2]);
a.call(b1,1,2);
</script>
</body>
</html>