Параметры клавиша API веб -анимации
// Web Animation API Keyframes options
var options = {
iterations: Infinity,
iterationStart: 0,
delay: 0,
endDelay: 0,
direction: 'alternate',
duration: 700,
fill: 'forwards',
easing: 'ease-out',
}
element.animate(keyframes, options);
Arko