<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>JSDom获取图层节点</title>
</head>
<body>
<script type="text/javascript">
function getAlls() {
var emails=document.getElementsByName("email");
var checkAll=document.getElementById("checkAll");
for(var i=0;i<emails.length;i++){
if(checkAll.checked){
emails[i].checked=true;
}else{
emails[i].checked=false;
}
}
}
</script>
<input type="checkbox" id="checkAll" onclick="getAlls()"><br>
<input type="checkbox" name="email">邮件1<br>
<input type="checkbox" name="email">邮件2<br>
<input type="checkbox" name="email">邮件3<br>
<input type="checkbox" name="email">邮件4<br>
<input type="checkbox" name="email">邮件5
</body>
</html>
原文：https://www.cnblogs.com/god1/p/12115158.html