<html>
<head>
<title>全选与反选</title>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312">
<script type="text/javascript" language="javascript">
// --列头全选框被单击---
function ChkAllClick(sonName, cbAllId) {
var arrSon = document.getElementsByName(sonName);
var cbAll = document.getElementById(cbAllId);
var tempState = cbAll.checked;
for (i = 0; i < arrSon.length; i++) {
if (arrSon[i].checked != tempState)
arrSon[i].click();
}
}
// --子项复选框被单击---
function ChkSonClick(sonName, cbAllId) {
var arrSon = document.getElementsByName(sonName);
var cbAll = document.getElementById(cbAllId);
for (var i = 0; i < arrSon.length; i++) {
if (!arrSon[i].checked) {
cbAll.checked = false;
return;
}
}
cbAll.checked = true;
}
// --反选被单击---
function ChkOppClick(sonName) {
var arrSon = document.getElementsByName(sonName);
for (i = 0; i < arrSon.length; i++) {
arrSon[i].click();
}
}
</script>
</head>
<body>
<form id="Form1" runat="server">
<INPUT name="chkAll" id="chkAll" title="全选" onClick="ChkAllClick(‘chkSon‘,‘chkAll‘)" type="checkbox" />全选
<INPUT name="chkOpposite" id="chkOpposite" title="反选" onClick="ChkOppClick(‘chkSon‘)" type="checkbox" />反选
<input type="button" id="add" name="add" onclick="AddTOWISH()" value="add"/>
<br />
<%for (int i = 0; i < 10; i++)
{%>
<INPUT name="chkSon" id=‘chkSon<%=i+1 %>‘ type="checkbox" value=‘<%=i+1 %>‘ onclick="ChkSonClick(‘chkSon‘,‘chkAll‘)" /><%=i+1 %>
<br />
<%} %>
</form>
</body>
</html>
原文：http://www.cnblogs.com/lizihong/p/javascript.html