jQuery无缝滚动轮播图

Posted 2020-08-15

//html部分
<div class="lunbo right">
    <div class="show">
        <a href="#"><img src="images/cbda425ea72ec5013b8388ae982e9a52.jpg" alt=""/></a>
        <a href="#"><img src="images/5fe7763e7458e23e6ebeaa682e25a472.jpg" alt=""/></a>
        <a href="#"><img src="images/9e5d942d12063976efcfff0c6c0d1f52.jpg" alt=""/></a>
        <a href="#"><img src="images/45a94c6843a097d5984cabbf2489e41f.jpg" alt=""/></a>
        <a href="#"><img src="images/748072bc51445e5c2c1f0a2184e95142.jpg" alt=""/></a>
        <a href="#"><img src="images/230289326a4063dee5e4b7d0cb5c4c81.jpg" alt=""/></a>
        <a href="#"><img src="images/f2c22e6ec669000ba5765971005b53aa.jpg" alt=""/></a>
        <a href="#"><img src="images/d139797b6e1ecd8185f0f7ca771cf9be.jpg" alt=""/></a>
    </div>
    <div class="point">
        <span>1</span><span>2</span><span>3</span><span>4</span>
        <span>5</span><span>6</span><span>7</span><span>8</span>
    </div>
    <div class="btn btn_l">&lt;</div>
    <div class="btn btn_r">&gt;</div>
</div>

//css部分

.banner{width: 100%;height: 480px;}
.banner1{width: 1200px;height: 100%;margin: 0 auto;}
.lunbo{width: 1000px;height: 100%;position: relative;overflow: hidden;}
.show{width: 10000px;height: 100%;position: absolute;top: 0;left: 0;}
.show a{float: left;}
.point{position: absolute;left: 400px;bottom: 10px;}
.point span{float: left;width: 25px;height: 25px;margin:0 5px;cursor: pointer; border-radius: 100%;color: #fff;text-align: center;line-height: 25px; background: #555;opacity: 0.8;filter: alpha(opacity=80);}
.point .on{background-color: #ff6a00;}
.btn {width: 40px;height: 70px;background-color: #808080;opacity: 0.7; filter:alpha(opacity=70); position:absolute;top:50%;margin-top:-35px;cursor:pointer;text-align:center;line-height:70px;font-size:60px;color:#fff;font-family:simsun;display:none;
}
.btn_l { left:0;}
.btn_r { right:260px;}
.lunbo:hover .btn {display:block;}

//js部分

function lunbo(oshow,olunbo,opoint,obtl,obtr,oleft) {
    var i = 0;
    var clone = $("a",oshow).first() .clone();//克隆第一张图片
    $(oshow).append(clone);//复制到列表最后
    var size = $("a",oshow).size();
    $("span",opoint).first().addClass("on");
    /*自动轮播*/
    var t = setInterval(function () { i++; move();},3000);
    /*鼠标悬停事件*/
    $(olunbo).hover(function () {
        clearInterval(t);//鼠标悬停时清除定时器
    }, function () {
        t = setInterval(function () { i++; move(); }, 3000); //鼠标移出时清除定时器
    });
    /*鼠标滑入圆点事件*/
    $("span",opoint).hover(function () {
        var index = $(this).index();//获取当前索引值
        i = index;
        $(oshow).stop().animate({ left: -index * oleft }, 500);
        $(this).addClass("on").siblings().removeClass("on");
    });
    /*左右按钮*/
    $(obtl).click(function () {i++;move();});
    $(obtr).click(function () {i--;move();});
    /*滚动事件*/
    function move() {
        if (i == size) {
            $(oshow).css({ left: 0 });
            i = 1;
        }
        if (i == -1) {
            $(oshow).css({ left: -(size - 1) * oleft });
            i = size - 2;
        }
        $(oshow).stop().animate({ left: -i * oleft }, 500);
        if (i == size - 1) {
            $("span",opoint).eq(0).addClass("on").siblings().removeClass("on");
        } else {
            $("span",opoint).eq(i).addClass("on").siblings().removeClass("on");
        }
    }
}

lunbo(".show",".lunbo",".point",".btn_l",".btn_r",1000);