Uncaught TypeError: $(...).modal is not a function错误

When I was practicing the ssm project, I reported an Uncaught TypeError: $(...).modal is not a function error.


Baidu has a lot of errors . Most of them are jQuery plug-ins referenced before bootstrap, but I clearly referenced the jQuery plug-ins before bootstrap. Still reported an error.

Finally, I changed the version of the jQuery plugin to a higher version and found that there was no problem

<link href="${APP_PATH}/static/bootstrap-3.3.7-dist/css/bootstrap.min.css" rel="stylesheet">
<script type="text/javascript" src="${APP_PATH}/static/bootstrap-3.3.7-dist/js/bootstrap.min.js"></script>