获取checkbox选中项的值，全选及清空所有选中项
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Title</title>
<script type="text/javascript" src="https://cdn.bootcss.com/jquery/1.7.2/jquery.min.js"></script>
</head>
<body>
<form action="#" method="post">
<input type="checkbox" id="select"/> 全选<br/>
<input type="checkbox" value="1" name="items"><br/>
<input type="checkbox" value="2" name="items"><br/>
<input type="checkbox" value="3" name="items"> <br/>
<input type="checkbox" value="4" name="items"> <br/>
<input type="checkbox" value="5" name="items"> <br/>
<input type="checkbox" value="6" name="items"> <br/>
<input type="checkbox" value="7" name="items"> <br/>
<input type="checkbox" value="8" name="items"> <br/>
<input type="checkbox" value="9" name="items"> <br/>
<input type="checkbox" value="10" name="items"> <br/>
<input type="checkbox" value="11" name="items"> <br/>
<input type="submit" id="submit" value="提交">
</form>
<script>
$(function() {
$("#select").click(function() {
if ($(this).attr("checked")) {
$("input[name=items]").each(function() {
$(this).attr("checked", true);
});
} else {
$("input[name=items]").each(function() {
$(this).attr("checked", false);
});
}
});
//得到选中的值，ajax操作使用
$("#submit").click(function() {
var text="";
$("input[name=items]").each(function() {
if ($(this).attr("checked")) {
text += ","+$(this).val();
}
});
alert(text);
});
});
</script>
</body>
</html>
