$(function () {
    function tab2() {
        var leftArrow = $(".leftArrowTwo")
        var rightArrow = $(".rightArrowTwo")
        var allPelpol = $("#allPelpolTwo")
        var qh = $('#qhTwo')
        // var videohd=$('#videohd')
        // 目前选中项
        var rightClick = 0
        // 左右移动距离
        var socerleft = 0
        // 每次移动距离
        var left = 1200
        var right = -1200
        var swiper = 0
        var leftwidth = 0
        var swiperleft = 221
        var swiperright = -221
        var swiperchelNum = document.getElementById('qhTwo').children.length
        // 子元素数量
        var chelNum = document.getElementById('allPelpolTwo').children.length
        leftArrow.click(function () {
            rightClick -= 1
            var lis1 = $("#qh div");
            for (let j = 0; j < lis1.length; j++) {
                if (rightClick == j) {
                    lis1.eq(rightClick).addClass('mrxzstyle')
                } else {
                    lis1.eq(j).removeClass('mrxzstyle')
                }
            }
            if (rightClick < 0) {
                rightClick = swiperchelNum - 1
                swiper = -2 * swiperleft
                leftwidth=swiper
                qh.css('transform', 'translateX('+leftwidth+'px)')
                qh.css('transition', 'all 1.5s')
            }
            if (rightClick < swiperchelNum - 2 && rightClick > 2) {
                leftwidth = leftwidth += swiperleft
                qh.css('transform', 'translateX('+leftwidth+'px)')
                qh.css('transition', 'all 1.5s')
            }
            // 
            var jl = socerleft += left
            if (jl>0) {
                jl = (chelNum-1)*right
                socerleft=(chelNum-1)*right
            }
            allPelpol.css('transform', 'translateX('+jl+'px)')
            allPelpol.css('transition', 'all 1.5s')
        })
        rightArrow.click(function () {
            rightClick += 1
            var lis1 = $("#qhTwo div");
            for (let j = 0; j < lis1.length; j++) {
                if (rightClick == j) {
                    lis1.eq(rightClick).addClass('mrxzstyle')
                } else {
                    lis1.eq(j).removeClass('mrxzstyle')
                }
            }
            if (rightClick &gt; 3 &amp;&amp; rightClick<swiperchelnum-1) 'all="" 'translatex('+jl+'px)')="" 'translatex('+leftwidth+'px)')="" ()="" (jl<(chelnum-1)*right)="" (let="" (rightclick="" +="1" 1.5s')="" <="" allpelpol.css('transform',="" allpelpol.css('transition',="" div");="" else="" for="" if="" intervaltwoid="function" j="" j++)="" jl="0" leftwidth="0" lis1='$("#qhTwo' lis1.eq(0).addclass('mrxzstyle')="" lis1.eq(j).removeclass('mrxzstyle')="" lis1.eq(rightclick).addclass('mrxzstyle')="" lis1.length;="" qh.css('transform',="" qh.css('transition',="" rightclick="" socerleft="0" swiper="0" var="" {="" }="" })=""> 3 &amp;&amp; rightClick&lt;swiperchelNum-1) {
                    var leftwidth = swiper += swiperright
                    qh.css('transform', 'translateX('+leftwidth+'px)')
                    qh.css('transition', 'all 1.5s')
            }
            if (rightClick==swiperchelNum) {
                rightClick = 0
                leftwidth = 0
                swiper=0
                qh.css('transform', 'translateX('+leftwidth+'px)')
                qh.css('transition', 'all 1.5s')
                lis1.eq(0).addClass('mrxzstyle')
            }
            // 
            var jl = socerleft += right
            if (jl&lt;(chelNum-1)*right) {
                jl = 0
                socerleft=0
            }
            allPelpol.css('transform', 'translateX('+jl+'px)')
            allPelpol.css('transition', 'all 1.5s')
        }
        var t = setInterval(intervaltwoId, 3000)
        var qhswiper = $("#qhTwo div");
            for (let i = 0; i &lt; qhswiper.length; i++) {
            qhswiper.eq(i).click(function() {
                var lis1 = $("#qhTwo div");
                for (let j = 0; j &lt; qhswiper.length; j++) {
                    if (i == j) {
                        lis1.eq(i).addClass('mrxzstyle')
                    } else {
                        lis1.eq(j).removeClass('mrxzstyle')
                    }
                }
                var jl = right*i
                allPelpol.css('transform', 'translateX('+jl+'px)')
                allPelpol.css('transition', 'all 1.5s') 
            }) 
            qhswiper.eq(i).mouseover(function () {
                clearInterval(t);
            })
            qhswiper.eq(i).mouseout(function () {
                t=setInterval(intervaltwoId,3000)
            })
}
    }
    tab2()
})





// function tab2() { 
//   setInterval(, 3000);    
// }
// tab2()


</swiperchelnum-1)>