Used when another element use jquery.qrcode will perform an error

[Ulyssesyi]

<script src="https://cdn.bootcss.com/jquery.qrcode/1.0/jquery.qrcode.min.js"></script> <script type="text/javascript" src="../js/lib/watermark.min.js"></script>

Uncaught TypeError: $(...).qrcode is not a function
at HTMLDocument. (bind.min.js?1498624130:1)
at Function. (watermark.min.js:22)
at Function.each (watermark.min.js:15)
at Function.ready (watermark.min.js:22)
at HTMLDocument. (watermark.min.js:22)