change javascript without clear cache code example

Example 1: forece reload without clear cache js

<script src="js/myfile.js?t=<?=time()?>" type="text/javascript"></script>

Example 2: clear cache javascript

Press the button F12
Go to settings and then to the Network:
Now click "Disable Cache (while DevTools are open)"
Then click and hold the mouse button on the reload page and select the last option (Reload site and delete Cache)