<html>
<body>
<script type="text/javascript">
Function.prototype.get_my_name = function(){
return this;
};
var func = function(){
this.my_name = 'function name';
} console.log(func.get_my_name());
console.log(func.my_name);//想明白为什么不能够输出my_name
</script>
</body>
</html>