while using bootstrap 4 we usually get this kind of error and jquery bootstrap.min.js is working correctly

Error  is:

Uncaught TypeError: Cannot read property 'fn' of undefined
    at bootstrap.min.js:6
    at bootstrap.min.js:6
    at bootstrap.min.js:6
    at bootstrap.min.js:6

This is a common error if you using Cordova, HTML in bootstrap 4 template design with jquery, etc

The solution is very simple:

load your jquery before the bootstrap or any other js like the below example, because bootstrap 4 uses the jquery functionality to run its own functionality, simply it is dependent on that.

<script src="js/jquery-3.3.1.slim.min.js"></script>
<script src="js/bootstrap.min.js"></script>
<script src="js/popper.min.js"></script>

like the above example, jquery provides proper code to bootstrap js to run, that it.

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