##### ###### ##### ### # # ### # # ###### ## ## ## ## ## ## ## # # # # # ## ##### #### ##### # # # # # # # #### ## # ## ## ## ## # # # # # ## ## # ###### ## ### # ### # ######
##### ###### ##### ### # # ### # # ###### ## ## ## ## ## ## ## # # # # # ## ##### #### ##### # # # # # # # #### ## # ## ## ## ## # # # # # ## ## # ###### ## ### # ### # ######
The script tag problem
Before ES modules, you loaded scripts with <script> tags. All variables were global, causing naming conflicts.
<script src="utils.js"></script>
<script src="app.js"></script>
Order mattered. Dependencies were implicit. Large projects became tangled webs of scripts. Modules solved these problems.