实例属性

const t = new Totalizer();

t.add({
    ...
    delay: 200,
    duration: 1000,
})

t.reverse();
t.play();

console.log(t.isReverse); // true
console.log(t.totalTime); // 1200

Properties	Des
totalTime	-
currentTime	-
isReverse	-
isAlternate	-
isPlaying	-
loopTimes	-