【js】使用javascript 实现静态网页分页效果

时间：2022-01-28 20:36:02
<!DOCTYPE html>

<html>

    <head>

        <meta http-equiv="content-Type" content="text/html;charset=utf-8">

        <title>网页特效 静态代码的分页效果 </title>

        <style type="text/css">

            li{display:none}

        </style>

    </head>

<body>

    <ul id="box">

        <li>静态网页分页效果01页</li>

        <li>静态网页分页效果02页</li>

        <li>静态网页分页效果03页</li>

        <li>静态网页分页效果04页</li>

        <li>静态网页分页效果05页</li>

        <li>静态网页分页效果06页</li>

        <li>静态网页分页效果07页</li>

        <li>静态网页分页效果08页</li>

        <li>静态网页分页效果09页</li>

        <li>静态网页分页效果10页</li>

        <li>静态网页分页效果11页</li>

        <li>静态网页分页效果12页</li>

        <li>静态网页分页效果13页</li>

        <li>静态网页分页效果14页</li>

        <li>静态网页分页效果15页</li>

        <li>静态网页分页效果16页</li>

        <li>静态网页分页效果17页</li>

        <li>静态网页分页效果18页</li>

        <li>静态网页分页效果19页</li>

        <li>静态网页分页效果20页</li>

    </ul>

    <div id="page"></div>

    <script language="javascript">

        var obj,j;

        var page = 0;

        var currentPage = 0;//当前页

        var listNum = 2;//每页显示<ul>数

        var PagesLen;//总页数

        var PageNum = 4;//分页链接接数(5个)

        window.onload = function(){

            obj = document.getElementById("box").getElementsByTagName("li");

            j = obj.length//li的个数

            PagesLen = Math.ceil(j / listNum);//总页数

            upPage(0)

        }

        function upPage(p){

            currentPage = p

            //内容变换

            for (var i = 0; i < j; i++){

                obj[i].style.display="none"

            }

            for (var i = p * listNum; i < (p+1) * listNum; i++){

                if(obj[i])obj[i].style.display = "block";

                console.log(i);

            }

            //分页链接变换

            var strS = '<a href="###" onclick="upPage(0)">首页</a>  ';//首页

            var PageNum_2 = PageNum % 2 == 0 ? Math.ceil(PageNum / 2)+1 : Math.ceil(PageNum / 2);

            var PageNum_3 = PageNum % 2 == 0 ? Math.ceil(PageNum / 2) : Math.ceil(PageNum / 2) + 1;

            console.log(PageNum_2,PageNum_3);

            var strC = "",startPage,endPage;

            if (PageNum >= PagesLen) {

                startPage = 0;

                endPage = PagesLen - 1;

            }else if (currentPage < PageNum_2){

                startPage = 0;

                endPage = PagesLen - 1 > PageNum ? PageNum : PagesLen - 1;

            }else {

                startPage=(currentPage+PageNum_3 >= PagesLen) ? PagesLen-PageNum - 1 : currentPage-PageNum_2 + 1;

                var t = startPage + PageNum;

                endPage =(t > PagesLen) ? PagesLen - 1 : t;

            }

            console.log(startPage,endPage);

            for (var i = startPage;i <= endPage; i++){

                 if (i == currentPage)strC += '<a href="###" style="color:red;font-weight:700;" onclick="upPage('+i+')">'+(i+1)+'</a> '

                 else strC += '<a href="###" onclick="upPage('+i+')">'+(i+1)+'</a> '

            }

            var strE = ' <a href="###" onclick="upPage('+(PagesLen-1)+')">尾页</a>  ';//尾页

            var strE2 = currentPage + 1 + "/" + PagesLen + "页" + "  共" + j + "条" ;//共*条

            document.getElementById("page").innerHTML = strS + strC + strE + strE2;

        }

    </script>

</body>

</html>

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