菜鸟教程在线编辑器

AI 编程工具

 
                <!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>菜鸟教程(runoob.com)</title>
<script>
function foo() {
    let selObj = window.getSelection();
    alert(selObj.toString());
}
</script>
</head>
<body>
<p>选择我这边内容</p>
<input type="button" value="选中上面内容后点我" onclick="foo()" />

</body>
</html>
              