touch移动端轮播图

2022-08-11 07:59:30
<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width,user-scalable=no,initial-scale=1.0">
    <title>Title</title>
    <style>
        *{
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        li{
            list-style: none;
        }
        .clearFix:after,
        .clearFix:before{
            clear: both;
            height: 0;
            line-height: 0;
            visibility: hidden;
            display: block;
            content: "";
        }
        .container{
            max-width: 640px;
            min-width: 320px;
            margin: 0 auto;
            position: relative;
            overflow: hidden;
        }
        .container>ul:first-child{
            width: 1000%;
            transform: translateX(-10%);
        }
        .container>ul:first-child>li{
            width: 10%;
            float: left;
        }
        .container>ul:first-child>li>a{
            display: block;
            width: 100%;
        }
        .container>ul:first-child>li>a>img{
            display: block;
            width: 100%;
        }
        .container>ul:last-child{
            position: absolute;
            left: 50%;
            margin-left: -66px;
            bottom: 6px;
        }
        .container>ul:last-child>li{
            float: left;
            width: 12px;
            height: 12px;
            border-radius: 50%;
            background: pink;
            margin-left: 6px;
        }
        .container>ul:last-child>li.active{
            background: red;
        }
    </style>
</head>
<body>
    <div class="container">
        <ul class="clearFix">
            <li><a><img src="images/l8.jpg"></a></li>
            <li><a><img src="images/l1.jpg"></a></li>
            <li><a><img src="images/l2.jpg"></a></li>
            <li><a><img src="images/l3.jpg"></a></li>
            <li><a><img src="images/l4.jpg"></a></li>
            <li><a><img src="images/l5.jpg"></a></li>
            <li><a><img src="images/l6.jpg"></a></li>
            <li><a><img src="images/l7.jpg"></a></li>
            <li><a><img src="images/l8.jpg"></a></li>
            <li><a><img src="images/l1.jpg"></a></li>
        </ul>
        <ul class="clearFix">
            <li class="active"></li>
            <li></li>
            <li></li>
            <li></li>
            <li></li>
            <li></li>
            <li></li>
            <li></li>
        </ul>
    </div>

<script>
    window.onload=function () {
        banner();
    }
    function banner() {
        var banner=document.querySelector(".container");
        var width=banner.offsetWidth;

        var imageBox=banner.querySelector("ul:first-child");
        var pointBox=banner.querySelector("ul:last-child");

        var points=pointBox.querySelectorAll("li");

        var setTranslateX=function (translateX) {
            imageBox.style.transform=‘translateX(‘+translateX+‘px)‘;
            imageBox.style.webkitTtranform=‘translateX(‘+translateX+‘px)‘;
        }
        var removeTransition=function () {
            imageBox.style.transition="none";
            imageBox.style.webkitTransition = ‘none‘;
        }
        var addTransition=function () {
            imageBox.style.transition="all 0.2s";
            imageBox.style.webkitTransition = ‘all 0.2s‘;
        }

        var index=1;
        var timer=setInterval(function () {
            index++;
            imageBox.style.transition="all 0.2s";
            imageBox.style.webkitTransition = ‘all 0.2s‘;
            imageBox.style.transform=‘translateX(‘+(-index*width)+‘px)‘;
            imageBox.style.webkitTtranform=‘translateX(‘+(-index*width)+‘px)‘;
        },1000);

        imageBox.addEventListener("transitionend",function () {
            if(index>=9){
                index=1;
                imageBox.style.transition="none";
                imageBox.style.webkitTransition = ‘none‘;

                imageBox.style.transform=‘translateX(‘+(-index*width)+‘px)‘;
                imageBox.style.webkitTtranform=‘translateX(‘+(-index*width)+‘px)‘;
            }else if(index<=0){
                index=8;
                imageBox.style.transition="none";
                imageBox.style.webkitTransition = ‘none‘;

                imageBox.style.transform=‘translateX(‘+(-index*width)+‘px)‘;
                imageBox.style.webkitTtranform=‘translateX(‘+(-index*width)+‘px)‘;
            }
            setPoint();
        })

        var setPoint=function () {
            for (var i=0;i<points.length;i++){
                var obj=points[i];
                obj.classList.remove("active");
            }
            points[index-1].classList.add("active");
        }

        var startX=0;
        var distanceX=0;
        var isMove=false;

        imageBox.addEventListener("touchstart",function (e) {
            clearInterval(timer);
            startX=e.touches[0].clientX;
        })

        imageBox.addEventListener("touchmove",function (e) {
            var moveX=e.touches[0].clientX;

            distanceX=moveX-startX;
            var translateX=-index*width+distanceX;
            removeTransition();
            setTranslateX(translateX);
            isMove = true;
        })

        imageBox.addEventListener("touchend",function () {
            if(isMove){
                if(Math.abs(distanceX)<width/3){
                    addTransition();
                    setTranslateX(-index*width);
                }else{
                    if(distanceX>0){
                        index--;
                    }else{
                        index++;
                    }
                    addTransition();
                    setTranslateX(-index*width);
                }
            }
            /*最好做一次参数的重置*/
            startX = 0;
            distanceX = 0;
            isMove = false;

            /*加上定时器*/
            clearInterval(timer);
            timer=setInterval(function () {
                index++;
                addTransition();
                setTranslateX(-index * width);
            },1000)
        })


    }
</script>
</body>
</html>
touch移动端轮播图
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