<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <title>dropdown</title> </head> <body> <!-- 1. Define some markup --> <button type="button">Select</button> <select> <option>Option 1</option> <option selected>Option 2</option> <option>Option 3</option> </select> <!-- 2. Include library --> <script src="../dist/select.js"></script> <!-- 3. Select! --> <script> var dropdown = document.querySelector('select'); var button = document.querySelector('button'); button.addEventListener('click', function(e) { var selected = select(dropdown); console.log(selected); }); </script> </body> </html>