js实现去重

1、js实现一个把数组里面的重复元素去除的方法：

var arr=[12,33,52,33,63,9,13,32,12]

function remRepeat(arr){

var i,tmp=[];
for(i in arr){
if(tmp.join(',').indexOf(arr[i])==-1){
tmp.push(arr[i]);
}
}
return tmp;
}
var r=remRepeat(arr);

console.log(r);

2、js实现简单的AOP

var name = 'feifan';

var email = 'feifan@163.com';
var website = 'http://coolshell.cn';
var feifan = {
name : 'feifan',
email : 'feifan@163.com',
website : 'http://feifan.cn'
};
//以成员的方式
feifan.name;
feifan.email;
feifan.website;
//以 hash map 的方式
feifan["name"];
feifan["email"];
feifan["website"];
//我们可以看到， 其用 function 来做 class。
var Person = function(name, email, website){
this.name = name;
this.email = email;
this.website = website;
this.sayHello = function(){
var hello = "Hello, I'm "+ this.name + "， \n" +
"my email is: " + this.email + "， \n" +
"my website is: " + this.website;
console.log(hello);
};
};
var feifan = new Person("feifan", "feifan@163.com",
"http://feifan.cn");
feifan.sayHello();