<body>
<input id="1" type="checkbox" name="sheBei" value="1" checked="checked">水
<input id="2" type="checkbox" name="sheBei" value="2" checked="checked">电
<input id="3" type="checkbox" name="sheBei" value="3">煤气/天然气
<input id="4" type="checkbox" name="sheBei" value="4">暖气
<input id="5" type="checkbox" name="sheBei" value="5">有线电视
<script language="javascript">
<!--
var cc="1,3,5";
cc=cc.split(",")
for (var i=0;i<cc.length;i++)
document.getElementById(cc[i]).checked=1
//-->
</script>
</body>
<body>
<div id=inf>
<input id="1" type="checkbox" name="sheBei" value="1" checked="checked">水
<input id="2" type="checkbox" name="sheBei" value="2" checked="checked">电
<input id="3" type="checkbox" name="sheBei" value="3">煤气/天然气
<input id="4" type="checkbox" name="sheBei" value="4">暖气
<input id="5" type="checkbox" name="sheBei" value="5">有线电视
</div>
<script language="javascript">
<!--
var cc="1,3,5";
cc=cc.split(",")
clearAll()//全部归零
for (var i=0;i<cc.length;i++)
document.getElementById(cc[i]).checked=1
function clearAll(){
var obj=document.getElementById("inf").getElementsByTagName("input")
for (var i=0;i<obj.length;i++)
if (obj[i].type=="checkbox")
obj[i].checked=0
}
//-->
</script>
</body>
想了很久~!