<%= button_tag 'Add a new field', id: 'add_correct_answer', type: 'button' %>

$(document).ready(function() {
    // When the add_button is pressed
    $('#add_correct_answer').click(function() {
    // Container (already created)
    var container = $('.buttons-fields');

    // Create the input wrapper (input tag + delete button), and append it to `container`
    var input_wrapper = $('<div>', { class: 'input-wrapper' }).appendTo(container);

    // Create an input tag, and append it to input_wrapper
    var input = $('<input>', { name: 'correct_answers[]', type: 'text' }).appendTo(input_wrapper);

    // Create the remove button, append it to input_wrapper, and add a click callback to
    // remove the input wrapper if it's pressed.
    var remove = $('<span>', { text: 'x' }).appendTo(input_wrapper).click(function() {
      input_wrapper.remove();
    });
    });