clipboard.js — Copy to clipboard without Flash

• https://github.com/zenorocha/clipboard.js/archive/master.zip
• https://github.com/zenorocha/clipboard.js/wiki/CDN-Providers
• https://github.com/zenorocha/clipboard.js/blob/master/demo/constructor-selector.html#L18
• https://github.com/zenorocha/clipboard.js/blob/master/demo/constructor-node.html#L16-L17
• https://github.com/zenorocha/clipboard.js/blob/master/demo/constructor-nodelist.html#L18-L19
• https://stackoverflow.com/questions/1687296/what-is-dom-event-delegation
• https://twitter.com/hashtag/perfmatters
• https://developer.mozilla.org/en-US/docs/Web/Guide/HTML/Using_data_attributes
• https://github.com/primer/primer-css/tree/master/modules/primer-tooltips
• https://developer.mozilla.org/en-US/docs/Web/API/Selection
• https://developer.mozilla.org/en-US/docs/Web/API/Document/execCommand
• https://caniuse.com/#search=selection
• https://chrome.google.com/webstore/detail/codecopy/fkbfebkcoelajmhanocgppanfoojcdmg
• https://addons.mozilla.org/en-US/firefox/addon/codecopy/
• http://zenorocha.com/
• http://zenorocha.mit-license.org/
• https://liferay.com