CODE EXAMPLE FOR JAVASCRIPT

javascript combobox

const combobox = document.createElement('select');
const values = ['red', 'green', 'blue', 'white', 'black'];

values.forEach(e => {
	const option = document.createElement('option')
	option.innerText = e;
	option.value = e;
	combobox.appendChild(option)
});

previouslyCapturedForm.appendChild(combobox);