Actually, neither of them work in node.js. They're packaged as commonjs modules and distributed with npm, like nearly all react components. Node.js is required to build a bundle or components using browserify or webpack.
# install dependencies
npm init
npm install --save react-clipboard browserify react uglify-js
# development with source maps
./node_modules/.bin/browserify -d -r react-clipboard -r react -o bundle.js
# for production
NODE_ENV=production \
./node_modules/.bin/browserify -r react-clipboard -r react \
| ./node_modules/.bin/uglifyjs -m > bundle.min.js
And if you include it on the page you can do:
var React = require('react');
var ReactClip = require('react-clipboard');
You can then add more dependencies as your app grows and you need more features, and maintain their versions using package.json.
Note: some packages also provide a standalone global build and/or publish to bower, etc. but you'll limit your options a lot if you avoid npm and browserify/webpack.