JavaScript 数组排序？

Question

给定以下数组:

var things = ['sandwich', 17, 'fake@sample.com', 3, 'horse', 'octothorpe', 'anotheremail@sample.com', '!invalid_garbage@sample.com']; 

将数组排序为另外三个:一个是数字，一个是字符串，一个是有效的电子邮件地址。丢弃无效地址。

Answer 1

var emails = [], strings = [], numbers = [];

things.forEach(function (e) {
    if (typeof e == "string") {

        if (e.indexOf("@") != -1) { // "looks" like an email if it contains @
           if (isEmail(e)) emails.push(e); // push if it is a valid email
        }

        else strings.push(e);
    }

    else if (typeof e == "number") {
       numbers.push(e);
    }
 });

function isEmail(str) { return /** true if str is a valid email **/ }

我将让您自行想出正确的 isEmail 函数。