npm install itheima-mingxiujing
const itheima = require('itheima-mingxiujing')
//调用dateFormat对时间进行格式化
const dtStr = itheima.dateFormat(new Date())
console.log(dtStr)
//未转换的html字符串
const htmlStr = '<h1>你好啊</h1>'
//转换之后
const str = itheima.htmlEscape(htmlStr)
console.log(str)
##还原html字符串
const str2 = itheima.htmlunEscape(str)
console.log(str2)