引入js文件

<script src="js/jquery.datatables.min.js"></script>
<script src="js/dataTables.buttons.min.js"></script>
<script src="js/jszip.min.js"></script>
<script src="js/buttons.html5.min.js"></script>
<script src="js/buttons.flash.min.js"></script>
<script src="js/pdfmake.min.js"></script>
<script src="js/vfs_fonts.js"></script>
<script src="js/buttons.print.min.js"></script>