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<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title></title>
<script src="../img/jquery-1.8.2.js" type="text/javascript" charset="utf-8"></script>
<script type="text/javascript">
function checkAll(e) {
if($(e).prop("checked") == true) {
$("input[class='classA']").prop('checked', "checked");
} else {
$("input[class='classA']").prop('checked', "");
}
}
</script>
</head>
<body>
<input type="checkbox" onclick="checkAll(this)" /><strong>全选/全不选</strong><br />
<hr />
<input type="checkbox" class="classA" />1<br />
<input type="checkbox" class="classA" />1<br />
<input type="checkbox" class="classA" />1<br />
<input type="checkbox" class="classA" />1<br />
<input type="checkbox" class="classA" />1<br />
<input type="checkbox" class="classA" />1<br />
<input type="checkbox" class="classA" />1<br />
<input type="checkbox" class="classA" />1<br />
<input type="checkbox" class="classA" />1<br />
<input type="checkbox" class="classA" />1<br />
<input type="checkbox" class="classA" />1<br />
<input type="checkbox" class="classA" />1<br />
<input type="checkbox" class="classA" />1<br />
</body>
</html>