gets/sets the index of the selected option in the options array. Must be a positive, whole number inside the bounds of the options array
index
Examples
const dropdown = $.makeDropdown($.w/2, $.w/2, 100, [
"Option A",
"Option B",
"Option C",
"Option X",
"Option Y",
"Option Z",
"Option Q",
"Option R",
"Option S"
]);
function update() {
dropdown.draw();
$.text.print(dropdown.x, dropdown.y-25, "Index:"+dropdown.index);
}