npm install itheima-tools
const itheima = require('itheima-tools')
// 调用dateFormat对事件进行格式化
const dtDtr = itheima.dateFormet(new Date())
console.log(dtDtr);
// 调用htmlEscape将HTML字符串转换为实体
const htmlStr = itheima.htmlEscape('<h1>牛逼u啊还是滴哦</h1>')
console.log(htmlStr);
// 调用htmlUnEscape将实体转换回Html字符串
const str = itheima.htmlUnEscape(htmlStr)
console.log(str);
ISC