移动端卡片式轮播

/ 移动端案例轮播
$(function () {
        var imglength;
        if($('.customers-mobile').length == 1){ //首页
            imglength = $('.customers-box-mobile').find('.mo-padding').length
            $('.customers-box-mobile').css('width', imglength+'00%');
            if(remWidth < 768){
                cardBanner('customers-box-mobile')
            }
        } else if($('.case-studies-content').length == 1) { //案例
            if(remWidth < 768){
            cardBanner('case-studies-content-box-mobile')
            }
        }
})
function cardBanner(bannerImgBox) {
    var banner_img_box = $("." + bannerImgBox);
    var imglist = banner_img_box.find('.mo-padding');
    var imglength = imglist.length;
    banner_img_box.css('width', imglength+'00%')
    var imgWidth = banner_img_box.find('.mo-padding:first').width();
    var imgLeft = banner_img_box.find('.mo-padding:first').offset().left;
    var num = 0;
    // 初始化手指坐标点
    var startPoint = 0;
    var startEle = 0;
    var startPointLeft = 0;
    var startPointTop = 0;
    var movePointTop = 0;
    var movePointLeft = 0;
    var moveEle = 0;
    //自动变换封装函数
    function auto(){
        autochange = setInterval(function(){
            if (num == imglength - 1) {
                num = 0;
            } else{
                num = num + 1;
            }
            go(num);
        },10000)
    }
    //自动变换
    auto();
    /*改变函数 ------ 跳到哪*/
    function go(num){
        var firstLeft = imgWidth+imgLeft/2;
        if(num == 1){
            banner_img_box.animate({
                left: -firstLeft * num
            },300)
        } else if(num == imglength-1) {
            banner_img_box.animate({
                left: -(firstLeft + (imgWidth+imgLeft)*(num-1) - imgLeft/2)
            },300)
        } else {
            banner_img_box.animate({
                left: -(firstLeft + (imgWidth+imgLeft)*(num-1))
            },300)
        }
    }
    //手指按下
    var isDown = false;
    banner_img_box.on("touchstart",function(e){
        startPoint = e.changedTouches[0].pageX;
        startEle = banner_img_box.offset().left;
        startPointLeft = e.changedTouches[0].clientX;
        startPointTop = e.changedTouches[0].clientY;
        clearInterval(autochange);
        auto();
        isDown = true;
    });
    //手指滑动
    banner_img_box.on("touchmove",function(e){
        movePointLeft = e.changedTouches[0].clientX;
        movePointTop = e.changedTouches[0].clientY;
        if(isDown && Math.abs(movePointTop - startPointTop) < Math.abs(movePointLeft - startPointLeft)){
            isDown = false;
            moveEle = banner_img_box.offset().left;
            // 判断左滑、右滑
            if(movePointLeft < startPointLeft){ //右滑
                num = num + 1;
            } else if(movePointLeft > startPointLeft){
                num = num - 1;
            }
            num = num>(imglength-1) ? 0 : num;
            num = num<0 ? imglength-1 : num;
            go(num);
            clearInterval(autochange);
            auto();
        }else {
            isDown = false
        }
    });
}