示例代码如下:
<button type="button" onclick="doit()">doit</button>
<script type="text/javascript">
<!--
function doit() {
//Todo
tom.say();
// >> Tom aged 16
nancy.say = tom.say;
nancy.say();
// >> Tom aged 40
nancy.say = proxy(tom.say, tom);
nancy.say();
// >> Tom aged 16
}
var tom = {
name: 'Tom',
age: 16,
say: function() {
console.log('>> Tom aged ' + this.age)
}
};
var nancy = {
name: 'Nancy',
age: 40
};
var proxy = function(func, scope) {
return function() {
return func.apply(scope, arguments);
}
};
//-->
</script>