js -- 分页功能

2019-09-11 14:28:25 浏览数 (1)

html 代码

代码语言:javascript复制
<html>
<head>
    <meta charset='utf-8'>
<script type="text/javascript" src="page.js"></script>

 <style type="text/css">
    #idData {color: red;border: solid;text-align: center;}
    a{text-decoration: none;}
 </style>
</head>
<body onLoad="goPage(1,10);">
    <table id="idData" width="70%">        
        <tr><td>liujinzhong1</td><td>25</td><td>男</td><td>山西吕梁</td></tr>
        <tr><td>liujinzhong2</td><td>25</td><td>男</td><td>山西吕梁</td></tr>
        <tr><td>liujinzhong3</td><td>25</td><td>男</td><td>山西吕梁</td></tr>
        <tr><td>liujinzhong4</td><td>25</td><td>男</td><td>山西吕梁</td></tr>
        <tr><td>liujinzhong5</td><td>25</td><td>男</td><td>山西吕梁</td></tr>
        <tr><td>liujinzhong6</td><td>25</td><td>男</td><td>山西吕梁</td></tr>
        <tr><td>liujinzhong7</td><td>25</td><td>男</td><td>山西吕梁</td></tr>
        <tr><td>liujinzhong8</td><td>25</td><td>男</td><td>山西吕梁</td></tr>
        <tr><td>liujinzhong9</td><td>25</td><td>男</td><td>山西吕梁</td></tr>
        <tr><td>liujinzhong10</td><td>25</td><td>男</td><td>山西吕梁</td></tr>
        <tr><td>liujinzhong11</td><td>25</td><td>男</td><td>山西吕梁</td></tr>
        <tr><td>liujinzhong12</td><td>25</td><td>男</td><td>山西吕梁</td></tr>
        <tr><td>liujinzhong13</td><td>25</td><td>男</td><td>山西吕梁</td></tr>
        <tr><td>liujinzhong14</td><td>25</td><td>男</td><td>山西吕梁</td></tr>
        <tr><td>liujinzhong15</td><td>25</td><td>男</td><td>山西吕梁</td></tr>
        <tr><td>liujinzhong16</td><td>25</td><td>男</td><td>山西吕梁</td></tr>
        <tr><td>liujinzhong17</td><td>25</td><td>男</td><td>山西吕梁</td></tr>
        <tr><td>liujinzhong18</td><td>25</td><td>男</td><td>山西吕梁</td></tr>
        <tr><td>liujinzhong19</td><td>25</td><td>男</td><td>山西吕梁</td></tr>
        <tr><td>liujinzhong20</td><td>25</td><td>男</td><td>山西吕梁</td></tr>
        <tr><td>liujinzhong21</td><td>25</td><td>男</td><td>山西吕梁</td></tr>
        <tr><td>liujinzhong22</td><td>25</td><td>男</td><td>山西吕梁</td></tr>
        <tr><td>liujinzhong23</td><td>25</td><td>男</td><td>山西吕梁</td></tr>
        <tr><td>liujinzhong24</td><td>25</td><td>男</td><td>山西吕梁</td></tr>
        <tr><td>liujinzhong25</td><td>25</td><td>男</td><td>山西吕梁</td></tr>
        <tr><td>liujinzhong26</td><td>25</td><td>男</td><td>山西吕梁</td></tr>
        <tr><td>liujinzhong27</td><td>25</td><td>男</td><td>山西吕梁</td></tr>
        <tr><td>liujinzhong28</td><td>25</td><td>男</td><td>山西吕梁</td></tr>
        <tr><td>liujinzhong29</td><td>25</td><td>男</td><td>山西吕梁</td></tr>
        <tr><td>liujinzhong30</td><td>25</td><td>男</td><td>山西吕梁</td></tr>
        <tr><td>liujinzhong31</td><td>25</td><td>男</td><td>山西吕梁</td></tr>        
        <tr><td>liujinzhong32</td><td>25</td><td>男</td><td>山西吕梁</td></tr>
        <tr><td>liujinzhong33</td><td>25</td><td>男</td><td>山西吕梁</td></tr>
        <tr><td>liujinzhong34</td><td>25</td><td>男</td><td>山西吕梁</td></tr>
        <tr><td>liujinzhong35</td><td>25</td><td>男</td><td>山西吕梁</td></tr>
        <tr><td>liujinzhong36</td><td>25</td><td>男</td><td>山西吕梁</td></tr>
        <tr><td>liujinzhong37</td><td>25</td><td>男</td><td>山西吕梁</td></tr>        
        <tr><td>liujinzhong38</td><td>25</td><td>男</td><td>山西吕梁</td></tr>        
        <tr><td>liujinzhong39</td><td>25</td><td>男</td><td>山西吕梁</td></tr>        
        <tr><td>liujinzhong40</td><td>25</td><td>男</td><td>山西吕梁</td></tr>        
    </table>
    <table width="60%" align="right">
        <tr><td><div id="barcon" name="barcon"></div></td></tr>
    </table>
</body> 
</html>

js 分页

代码语言:javascript复制
/**
 * 分页函数
 * pno--页数
 * psize--每页显示记录数
 * 分页部分是从真实数据行开始,因而存在加减某个常数,以确定真正的记录数
 * 纯js分页实质是数据行全部加载,通过是否显示属性完成分页功能
 **/
function goPage(pno,psize){
    var itable = document.getElementById("idData");
    var num = itable.rows.length;//表格所有行数(所有记录数)
    console.log(num);
    var totalPage = 0;//总页数
    var pageSize = psize;//每页显示行数
    //总共分几页 
    if(num/pageSize > parseInt(num/pageSize)){   
            totalPage=parseInt(num/pageSize) 1;   
       }else{   
           totalPage=parseInt(num/pageSize);   
       }   
    var currentPage = pno;//当前页数
    var startRow = (currentPage - 1) * pageSize 1;//开始显示的行  31 
       var endRow = currentPage * pageSize;//结束显示的行   40
       endRow = (endRow > num)? num : endRow;    40
       console.log(endRow);
       //遍历显示数据实现分页
    for(var i=1;i<(num 1);i  ){    
        var irow = itable.rows[i-1];
        if(i>=startRow && i<=endRow){
            irow.style.display = "block";    
        }else{
            irow.style.display = "none";
        }
    }
    var pageEnd = document.getElementById("pageEnd");
    var tempStr = "共" num "条记录 分" totalPage "页 当前第" currentPage "页";
    if(currentPage>1){
        tempStr  = "<a href="#" onClick="goPage(" (1) "," psize ")">首页</a>";
        tempStr  = "<a href="#" onClick="goPage(" (currentPage-1) "," psize ")"><上一页</a>"
    }else{
        tempStr  = "首页";
        tempStr  = "<上一页";    
    }

    if(currentPage<totalPage){
        tempStr  = "<a href="#" onClick="goPage(" (currentPage 1) "," psize ")">下一页></a>";
        tempStr  = "<a href="#" onClick="goPage(" (totalPage) "," psize ")">尾页</a>";
    }else{
        tempStr  = "下一页>";
        tempStr  = "尾页";    
    }

    document.getElementById("barcon").innerHTML = tempStr;
    
}

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