jQuery คือไม่กำหนดจาวาสคริปต์
<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.7.1/jquery.min.js" type="text/javascript"></script>
jquery$คือไม่กำหนดไว้
<!--If that error occurs, you need to include Jquery in the HTML-->
<script src="https://code.jquery.com/jquery-3.3.1.min.js"></script>
อ้างอิงผิดพลาด$คือไม่กำหนดไว้ jquery
<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.9.1/jquery.min.js"></script>
$ไม่ได้กำหนดไว้ข้อผิดพลาด
<script src="http://ajax.googleapis.com/ajax/libs/jquery/2.0.0/jquery.min.js"></script>
<script type="text/javascript" src="./javascript.js"></script>
<script
src="http://maps.googleapis.com/maps/api/js?key=YOUR_APIKEY&sensor=false">
</script>