Documentation

Student-friendly HTML, CSS, and JavaScript reference with examples

Sections


                                        querySelector()


                                        querySelectorAll()


                                        .textContent


                                        .value


                                        for...of (DOM)


                                        addEventListener()


                                        'click'


                                        'input'


                                        .style


                                        .classList.add()


                                        .classList.remove()


                                        .classList.toggle()


                                        createElement()


                                        .appendChild()


                                        .remove()


                                        .parentElement


                                        .getAttribute()


                                        data-*

Input Event

The input event fires every time the user types in an input field.

const input = document.querySelector('input');
const display = document.querySelector('.display');

input.addEventListener('input', function() {
  display.textContent = input.value;
});

Use for live/real-time updates as user types.