方式一：
let weeks = ['日', '一', '二', '三', '四', '五', '六'];
let day = new Date().getDay();
console.log(weeks[day]);
// 二
方式二：
let week = "日一二三四五六".charAt(new...
String today = "2013-01-14";
SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd");
Date date = null;
try {
date = format.parse(today);
} catch (ParseException e) {
// TOD...
