CNN84school在线测试工具 - 语法例子使用教程参考手册运行参数

编辑您的代码：	查看结果:
<html> <body> <form> Select text: <input type="text" value="Hello world!" onselect="alert('You have selected some of the text.')"> <br /><br /> Select text: <textarea cols="20" rows="5" onselect="alert('You have selected some of the text.')"> Hello world!

查看结果: