Lodash works equally well on both servers (like node.js) and browsers.
Download with npm from the CLI:
npm install lodash
Then in your node scripts:
var _ = require("lodash"); // use lodash in your program...
<script src="lodash.js"></script>. (Fix the path if it's not in same directory as the webpage.)
Go to a CDN site and select the version you want to use. Copy the link and use it for the script reference in your page.
4.13.1 is current version at time of writing