<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en">
<head>
<meta http-equiv="Content-Type" content="text/html;charset=GB2312"/>
<title></title>
<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.7.2/jquery.min.js"></script>
<script type="text/javascript">
$(function () {
var $cr = $("#cr");
var cr = $cr.get(0);
$cr.click(function(){
if(cr.checked){
alert("感谢你的支持!你可以继续操作！");
}
});
});
</script>
</head>
<body>
<input type="checkbox" id="cr"/><label for="cr">我已经阅读了上面制度.</label>
</body>
</html>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en">
<head>
<meta http-equiv="Content-Type" content="text/html;charset=GB2312"/>
<title></title>
<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.7.2/jquery.min.js"></script>
<script type="text/javascript">
$(function () {
var $cr = $("#cr");
$cr.click(function(){
if($cr.is(":checked")){
alert("感谢你的支持!你可以继续操作！");
}
});
});
</script>
</head>
<body>
<input type="checkbox" id="cr"/><label for="cr">我已经阅读了上面制度.</label>
</body>
</html>
来源：https://www.cnblogs.com/dsfderek/archive/2012/05/03/2480181.html