npm install itheima-tools
const itheima = require('itheima-tools')
//调用dateFormat对时间进行格式化
const dtStr = itheima.dateFormat(new Date())
//结果 2023-09-12 11:21:03
console.log(dtsTr)
//带转换的HTML字符串
const htmlStr = '<h1 title="abc">这是h1标签<span>123 </span></h1>'
//调用htmlEscape方法进行转换
const str = itheima.htmlEscape(htmlStr)
//转换结果<h1 title="abc">这是h1标签<span>123&nbsp;</span></h1>
console.log(str)
//待还原的HTML字符串
const str2 = itheima.htmlUnEscape(str)
//输出结果<h1 title="abc">这是h1标签<span>123 </span></h1>
console.log(str2)
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