W3School TIY
编辑您的代码：
<html> <head> <script type="text/javascript"> function createOrder() { coffee=document.forms[0].coffee txt="" for (i=0;i<coffee.length;++ i) { if (coffee[i].checked) { txt=txt + coffee[i].value + " " } } document.getElementById("order").value="您订购的咖啡带有： " + txt } </script> </head> <body> <p>你喜欢怎么喝咖啡？</p> <form> <input type="checkbox" name="coffee" value="奶油">加奶油<br /> <input type="checkbox" name="coffee" value="糖块">加糖块<br /> <br /> <input type="button" onclick="createOrder()" value="发送订单"> <br /><br /> <input type="text" id="order" size="50"> </form> </body> </html>
查看结果: