Detect copied text using Google Analytics

ga-copy-tracking.js

jQuery(document).on('cut copy', function(){
	var currentPage = jQuery(document).attr('title');
	var words = [];
	var selection = window.getSelection() + '';
	words = selection.split(' ');
	wordsLength = words.length;

	if (words.length > 8) {
		words = words.slice(0, 8).join(' ');
		ga('send', 'event', 'Copied Text', currentPage, words + '... [' + wordsLength + ' words]');
	} else {
		if ( selection == '' || selection == ' ' ) {
			ga('send', 'event', 'Copied Text', currentPage, '[0 words]');
		} else {
			ga('send', 'event', 'Copied Text', currentPage, selection);
		}
	}
});