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.
<script src="https://cdn.jsdelivr.net/lodash/4.13.1/lodash.min.js"></script>
4.13.1 is current version at time of writing