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<p>张无忌</p>
<p>张三丰</p>
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var p1 = document.getElementsByTagName(‘p‘)[0]
var p2 = document.getElementsByTagName(‘p‘)[1]
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let newReturn = div.insertBefore(p2, p1)
console.log(newReturn === p2);
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学会了这个例子 你就掌握了InsertBefore的用法了 下期我会带大家封装一个原生dom里没有的insertAfter的函数，请关注前端小曹！谢谢支持，下期见
