判断一个form中的checkbox是否有被选中
<div style="border-right: #cccccc 1px solid; padding-right: 5px; border-top: #cccccc 1px solid; padding-left: 4px; font-size: 13px; padding-bottom: 4px; border-left: #cccccc 1px solid; width: 98%; padding-top: 4px; border-bottom: #cccccc 1px solid; background-color: #eeeeee;">http://www.blogjava.net/images/OutliningIndicators/None.gif<html>http://www.blogjava.net/images/OutliningIndicators/None.gif
http://www.blogjava.net/images/OutliningIndicators/None.gif<head>
http://www.blogjava.net/images/OutliningIndicators/None.gif
http://www.blogjava.net/images/OutliningIndicators/None.gif<title></title>
http://www.blogjava.net/images/OutliningIndicators/ExpandedBlockStart.gifhttp://www.blogjava.net/images/OutliningIndicators/ContractedBlock.gif<script language="javascript" type="text/javascript">http://www.blogjava.net/Images/dot.gif
http://www.blogjava.net/images/OutliningIndicators/InBlock.gif function check()
http://www.blogjava.net/images/OutliningIndicators/ExpandedSubBlockStart.gifhttp://www.blogjava.net/images/OutliningIndicators/ContractedSubBlock.gif http://www.blogjava.net/Images/dot.gif{
http://www.blogjava.net/images/OutliningIndicators/InBlock.gif var idss = document.getElementsByName("id");
http://www.blogjava.net/images/OutliningIndicators/InBlock.gif var flag = false;
http://www.blogjava.net/images/OutliningIndicators/InBlock.gif for(var i = 0; i < idss.length; i++)
http://www.blogjava.net/images/OutliningIndicators/ExpandedSubBlockStart.gifhttp://www.blogjava.net/images/OutliningIndicators/ContractedSubBlock.gif http://www.blogjava.net/Images/dot.gif{
http://www.blogjava.net/images/OutliningIndicators/InBlock.gif if(idss.checked)
http://www.blogjava.net/images/OutliningIndicators/ExpandedSubBlockStart.gifhttp://www.blogjava.net/images/OutliningIndicators/ContractedSubBlock.gif http://www.blogjava.net/Images/dot.gif{
http://www.blogjava.net/images/OutliningIndicators/InBlock.gif flag = true;
http://www.blogjava.net/images/OutliningIndicators/ExpandedSubBlockEnd.gif }
http://www.blogjava.net/images/OutliningIndicators/ExpandedSubBlockEnd.gif }
http://www.blogjava.net/images/OutliningIndicators/InBlock.gif alert(flag);
http://www.blogjava.net/images/OutliningIndicators/InBlock.gif return flag;
http://www.blogjava.net/images/OutliningIndicators/ExpandedBlockEnd.gif }
http://www.blogjava.net/images/OutliningIndicators/None.gif</script>
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http://www.blogjava.net/images/OutliningIndicators/None.gif<body>
http://www.blogjava.net/images/OutliningIndicators/None.gif<form name="aa">
http://www.blogjava.net/images/OutliningIndicators/None.gif <input type="checkbox" name="id" />
http://www.blogjava.net/images/OutliningIndicators/None.gif <input type="checkbox" name="id" />
http://www.blogjava.net/images/OutliningIndicators/None.gif <input type="checkbox" name="id" />
http://www.blogjava.net/images/OutliningIndicators/None.gif <input type="checkbox" name="id" />
http://www.blogjava.net/images/OutliningIndicators/None.gif <input type="button" onclick="check();" value="test"/>
http://www.blogjava.net/images/OutliningIndicators/None.gif</form>
http://www.blogjava.net/images/OutliningIndicators/None.gif</body>
http://www.blogjava.net/images/OutliningIndicators/None.gif
http://www.blogjava.net/images/OutliningIndicators/None.gif</html>
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