<!-- 把如下代碼加入<body>區域中 --> <SCRIPT LANGUAGE="Javascript"> <!-- Begin var checkflag = "false"; function check(field) { if (checkflag == "false") { for (i = 0; i < field.length; i++) { field[i].checked = true;} checkflag = "true"; return "什麼都不選"; } else { for (i = 0; i < field.length; i++) { fIEld[i].checked = false; } checkflag = "false"; return "選中所有"; } } // End --> </script> <form name=myform action="" method=post> <table> <tr><td> <b>請選擇下面的選項</b><br> <input type=checkbox name=list value="1">Java<br> <input type=checkbox name=list value="2">JavaScript<br> <input type=checkbox name=list value="3">ASP<br> <input type=checkbox name=list value="4">Html<br> <input type=checkbox name=list value="5">SQL<br> <br> <input type=button value="選中所有" onClick="this.value=check(this.form.list)"> </td></tr> </table> </form>