Question

console.log result

let timer; // setInterval载体
const myCarousel = document.getElementById('myCarousel');
const list = document.getElementById('list');
const buttons = 
document.getElementById('buttons').getElementsByTagName('span');

const prev = document.getElementById('prev');
const next = document.getElementById('next');
let index = 1; //按钮下标
let animated = false; // 图片切换ing的状态
window.onload = function () {

function animate(offSet) {
    animated = true;
    const newLeft = parseInt(list.style.left) + offSet;
    const time = 500;
    const interval = 5;
    const speed = offSet / (time / interval);


    function go() {
        if (Math.abs(parseInt(list.style.left) - newLeft) > 6) {
            list.style.left = parseInt(list.style.left) + speed + 'px';
            setTimeout(go, interval);
        } else {
            animated = false;
            list.style.left = newLeft + 'px';
            if (newLeft > -1366) {
                list.style.left = -2731 + 'px';
            } else if (newLeft < -2731) {
                list.style.left = -1366 + 'px';
            }
        }
    }

    go();
    console.log(new Date() + ": animate: " + timer);
}

/*点击左箭头切换图片*/
prev.onclick = function () {
    if (!animated) {
        index -= 1;

        if (index === 0) {
            index = 2
        }

        showButton();
        animate(1366)
    }
};

/*点击右箭头切换图片*/
next.onclick = function () {
    if (!animated) {
        index += 1;

        if (index === 3) {
            index = 1
        }

        showButton();
        animate(-1366);
    }
};

/*自动播放*/
function play() {
    console.log(new Date() + ": play before: " + timer);
    timer = window.setInterval(function () {
        next.onclick();  // ()存在的原理尚未清楚
    }, 5000);
    console.log(new Date() + ": play after: " + timer);
}

/*自动暂停*/
function stop() {
    window.clearInterval(timer);
    console.log(new Date() + ": stop: " + timer);
}

myCarousel.onmouseout = play;
myCarousel.onmouseover = stop;
play();
};

这是我轮换之一的代码，但是它不起作用，并且console.log成功地记录了计时器。一个生效一个生效一个没有生效，我要崩溃了！一切似乎都还好，我试图检查我可以在Internet上找到的信息，但没有任何效果

js失败的clearInterval

0 个答案: