<!DOCTYPE html>
<html lang="zh-cn">
<head>
<meta charset="UTF-8">
</head>
<body>
<script type="text/javascript" src="jquery-1.10.1.min.js" ></script>
<div id="box">
<input type="checkbox" onclick="checkAll(this)">全选<br><br>
<input type="checkbox"><br>
<input type="checkbox"><br>
<input type="checkbox"><br>
</div>
<script>
function checkAll (obj) {
$("#box input[type='checkbox']").prop('checked', $(obj).prop('checked'));
}
</script>
</body>
</html>
Effect picture: