document.addEventListener("DOMContentLoaded", function() { const league_select = document.getElementById('league_dropdown'); const team_select = document.getElementById('team_dropdown'); league_select.addEventListener('change', updateTeamSelect); function updateTeamSelect() { var selectedLeague = league_select.value; var teamSelect = team_select; // Clear existing options teamSelect.innerHTML = ""; // Add options based on the selected value from the first select element if (selectedLeague === "La Liga") { // Add options for La Liga addOption(teamSelect, "Option 1 for LL", "option1A"); addOption(teamSelect, "Option 2 for LL", "option2A"); } else if (selectedLeague === "Serie A") { // Add options for Serie A addOption(teamSelect, "Team 1 in Serie A", "option1B"); addOption(teamSelect, "Team 2 in Serie A", "option2B"); } else { // Add options for Bundesliga addOption(teamSelect, "Option 1 for Bun", "option1C"); addOption(teamSelect, "Option 2 for Bun", "option2C"); } } function addOption(selectElement, text, value) { var option = document.createElement("option"); option.text = text; option.value = value; selectElement.add(option); } });