点击运行
<html> <head> <script type="text/javascript"> function convertToUcase() { document.getElementById("fname").value=document.getElementById("fname").value.toUpperCase() document.getElementById("lname").value=document.getElementById("lname").value.toUpperCase() } </script> </head> <body> <form name="form1"> 名：<input type="text" id="fname" size="20" /> <br /><br /> 姓：<input type="text" id="lname" size="20" /> <br /><br /> 转换为大写 <input type="checkBox" onclick="if (this.checked) {convertToUcase()}"> </form> </body> </html>
运行结果
