<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Title</title>
</head>
<body>
<div id="#12">我喜欢学习python</div>
<a>123</a>
<a>456</a>
<a>789</a>
</body>
</html>
document.getElementById(‘#12‘)
<div id=?"#12">?我喜欢学习python?</div>?
document.getElementById(‘#12‘).innerText
"我喜欢学习python"
document.getElementById(‘#12‘).innerText="我也超级喜欢"
"我也超级喜欢"
document.getElementsByTagName(‘a‘)[1]
<a>?456?</a>?
document.getElementsByTagName(‘a‘)[1].innerText=‘qwe‘
"qwe"
msg = document.getElementsByTagName(‘a‘)
HTMLCollection(3) [a, a, a]
for(var i=0;i<msg;i++){msg[i].innerText=111}
undefined
for(var i=0;i<msg;i++){msg[i].innerText=111;}
undefined
for(var i=0;i<msg.length;i++){msg[i].innerText=111}
111
原文地址：https://www.cnblogs.com/qiangayz/p/8720546.html
时间： 2024-11-29 16:27:50