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var copyMergeWordsResultBtn = document.getElementById('button-copy-merge-words-result');

copyMergeWordsResultBtn.addEventListener('click', function (event) {
	var mergeWordsResultTextarea = document.getElementById('merge-words-result');
	mergeWordsResultTextarea.select();

	try {
		var successful = document.execCommand('copy');
		var msg = successful ? 'successful' : 'unsuccessful';
		console.log('Copying text command was ' + msg);
	} catch (err) {
		console.log('Oops, unable to copy');
	}
});