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Web APIs que você (provavelmente) não sabia que...
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Zeno Rocha
August 06, 2016
Technology
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Web APIs que você (provavelmente) não sabia que existiam
Zeno Rocha
August 06, 2016
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Transcript
não sabia que existiam web apis que você provavelmente @zenorocha
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canvas svg geolocation local storage web sockets audio video drag
& drop web rtc
page visibility
Provê uma API que checa se a aba atual está
visível ou não no navegador. page visibility
window.addEventListener('visibilitychange', () => { if (document.hidden) { console.log('Tab is hidden');
} else { console.log('Tab is focused'); } }); page visibility
None
window.addEventListener('visibilitychange', () => { switch(document.visibilityState) { case 'prerender': console.log('Tab is
pre-rendering'); break; case 'hidden': console.log('Tab is hidden'); break; case 'visible': console.log('Tab is focused'); break; } });
caniuse.com/#feat=pagevisibility BROWSER support
onde usar?
None
None
state online
Expõe o estado atual de disponibilidade da rede. online state
console.log(navigator.onLine ? 'online' : 'offline') online state
window.addEventListener('offline', networkStatus); window.addEventListener('online', networkStatus); function networkStatus(e) { console.log(e.type); } online
state
caniuse.com/#feat=online-status BROWSER support
None
onde usar?
None
VIBRATION
Provê acesso ao hardware de vibração de dispositivos móveis. vibration
// Vibrate for 1 second navigator.vibrate(1000); // Vibrate with a
pattern navigator.vibrate([400, 300, 300, 200, 500]); // Turn off vibration navigator.vibrate(0); VIBRATION vibrate wait vibrate wait vibrate
// Super Mario navigator.vibrate([125,75,125,275,200,275,125,75,125,27 5,200,600,200,600]); // Star Wars navigator.vibrate([500,110,500,110,450,110,200,110,170, 40,450,110,200,110,170,40,500]);
// Go Go Power Rangers navigator.vibrate([150,150,150,150,75,75,150,150,150,15 0,450]); VIBRATION https://goo.gl/bX4ZQv
caniuse.com/#feat=vibration BROWSER support
onde usar?
None
None
DEVICE orientation
Expõe as coordenadas de orientação física de um dispositivo. device
orientation
device orientation window.addEventListener('deviceorientation', (e) => { console.log(‘Gamma:’, e.gamma); console.log(‘Beta:’, e.beta);
console.log(‘Alpha:’, e.alpha); });
device orientation let logo = document.querySelector(‘img'); window.addEventListener('deviceorientation', (e) => {
let tiltLR = e.gamma; let tiltFB = e.beta; logo.style.transform = `rotate(${tiltLR}deg) rotate3d(1,0,0, ${tiltFB * -1}deg)`; });
None
caniuse.com/#feat=deviceorientation BROWSER support
onde usar?
None
clipboard copy & paste
Possibilita interação com o clipboard do usuário através de operações
de copiar, cortar e colar. clipboard
None
// 1. User interaction is required let button = document.querySelector('button');
button.addEventListener('click', () => { select(); copy(); }); clipboard
// 2. Programmatically select an element function select() { let
input = document.querySelector('input'); input.focus(); input.setSelectionRange(0, input.value.length); } clipboard
// 3. Copy selected element text function copy() { try
{ document.execCommand('copy'); } catch (err) { console.error(err); } } clipboard
document.addEventListener('copy', (e) => { console.log(e.target.value); }); document.addEventListener('cut', (e) => {
console.log(e.target.value); }); document.addEventListener('paste', (e) => { console.log(e.clipboardData.getData('text/plain')); }); clipboard
None
None
caniuse.com/#feat=clipboard BROWSER support
onde usar?
None
None
light ambient
Expõe dados do sensor que capta a intensidade de luz
de um ambiente. ambient light
window.addEventListener('devicelight', (e) => { console.log(`${e.value} lux`); }); ambient light
None
None
let sensor = new AmbientLightSensor(); sensor.start(); sensor.onchange = (e) =>
{ console.log(e.reading.illuminance); }; sensor.stop(); ambient light sensor
BROWSER caniuse.com/#feat=ambient-light support
onde usar?
None
None
STATUS battery
Permite que uma página web acesse informações sobre a bateria
de um dispositivo. battery status
navigator.getBattery().then((battery) => { console.log(`${battery.level * 100}%`); battery.addEventListener('levelchange', () => {
console.log(`${this.level * 100}%`); }); }); battery status
caniuse.com/#feat=battery-status BROWSER support
onde usar?
None
None
web components templates custom elements shadow dom html imports
progressive web apps service workers push notifications offline support app
manifest background sync
WEB assembly
WebAssembly, ou wasm, é um novo formato binário para desenvolvimento
de aplicações de baixo nível. web assembly
under developm ent BROWSER support
None
WEBVR
Uma API experimental que trás o mundo de Realidade Virtual
para web usando Oculus Rift ou Google Cardboard por exemplo. web VR
BROWSER support chromestatus.com/features#webvr
None
gamepad
Permite que páginas web se conectem com controles de video
game via USB. gamepad
window.addEventListener('gamepadconnected', () => { let gp = navigator.getGamepads()[0]; console.log(‘ID:’, gp.id);
console.log(‘Axes:’, gp.axes.length); console.log(‘Buttons:’, gp.buttons.length); }); gamepad
window.addEventListener('gamepadconnected', gameLoop); function gameLoop() { let gp = navigator.getGamepads()[0]; if
(gp.buttons[0].pressed) { console.log('X'); } requestAnimationFrame(gameLoop); } game loop
None
caniuse.com/#feat=gamepad BROWSER support
None
None
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obrigado @zenorocha muito