<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title></title>
</head>
<body>
<div contenteditable="true" id="guestbook_editor">2</div>
<button onclick="set_focus()">aa</button>
<script>
function set_focus()
{
var el=document.getElementById('guestbook_editor');
var range = document.createRange();
range.selectNodeContents(el);
range.collapse(false);
var sel = window.getSelection();
sel.removeAllRanges();
sel.addRange(range);
}
</script>
</body>
</html>
我看不太懂,额,原文地址:
https://www.cnblogs.com/jonie-wong/p/5519822.html
来源:https://www.cnblogs.com/woyujiezhen/p/12588808.html