51help TIY
码：
<html> <head> <script type="text/javascript"> function check(browser) { document.getElementById("answer").value=browser } </script> </head> <body> <p>浏览器？</p> <form> <input type="radio" name="browser" onclick="check(this.value)" value="Internet Explorer">Internet Explorer<br /> <input type="radio" name="browser" onclick="check(this.value)" value="Firefox">Firefox<br /> <input type="radio" name="browser" onclick="check(this.value)" value="Netscape">Netscape<br /> <input type="radio" name="browser" onclick="check(this.value)" value="Opera">Opera<br /> <br /> 览器是：<input type="text" id="answer" size="20"> </form> </body> </html>
查看结果: