1. 程式人生 > >js -- 分頁功能

js -- 分頁功能

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html 代碼

<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>山西呂梁</td></tr> <tr><td>liujinzhong2</td><td>25</td><td>男</td><td>山西呂梁</td></tr> <tr><td>liujinzhong3</td><td>25
</td><td>男</td><td>山西呂梁</td></tr> <tr><td>liujinzhong4</td><td>25</td><td>男</td><td>山西呂梁</td></tr> <tr><td>liujinzhong5</td><td>25</td><td>男</td><td>山西呂梁</td></tr> <tr><td>liujinzhong6</td><td>25
</td><td>男</td><td>山西呂梁</td></tr> <tr><td>liujinzhong7</td><td>25</td><td>男</td><td>山西呂梁</td></tr> <tr><td>liujinzhong8</td><td>25</td><td>男</td><td>山西呂梁</td></tr> <tr><td>liujinzhong9</td><td>25</td><td>男</td><td>山西呂梁</td></tr> <tr><td>liujinzhong10</td><td>25</td><td>男</td><td>山西呂梁</td></tr> <tr><td>liujinzhong11</td><td>25</td><td>男</td><td>山西呂梁</td></tr> <tr><td>liujinzhong12</td><td>25</td><td>男</td><td>山西呂梁</td></tr> <tr><td>liujinzhong13</td><td>25</td><td>男</td><td>山西呂梁</td></tr> <tr><td>liujinzhong14</td><td>25</td><td>男</td><td>山西呂梁</td></tr> <tr><td>liujinzhong15</td><td>25</td><td>男</td><td>山西呂梁</td></tr> <tr><td>liujinzhong16</td><td>25</td><td>男</td><td>山西呂梁</td></tr> <tr><td>liujinzhong17</td><td>25</td><td>男</td><td>山西呂梁</td></tr> <tr><td>liujinzhong18</td><td>25</td><td>男</td><td>山西呂梁</td></tr> <tr><td>liujinzhong19</td><td>25</td><td>男</td><td>山西呂梁</td></tr> <tr><td>liujinzhong20</td><td>25</td><td>男</td><td>山西呂梁</td></tr> <tr><td>liujinzhong21</td><td>25</td><td>男</td><td>山西呂梁</td></tr> <tr><td>liujinzhong22</td><td>25</td><td>男</td><td>山西呂梁</td></tr> <tr><td>liujinzhong23</td><td>25</td><td>男</td><td>山西呂梁</td></tr> <tr><td>liujinzhong24</td><td>25</td><td>男</td><td>山西呂梁</td></tr> <tr><td>liujinzhong25</td><td>25</td><td>男</td><td>山西呂梁</td></tr> <tr><td>liujinzhong26</td><td>25</td><td>男</td><td>山西呂梁</td></tr> <tr><td>liujinzhong27</td><td>25</td><td>男</td><td>山西呂梁</td></tr> <tr><td>liujinzhong28</td><td>25</td><td>男</td><td>山西呂梁</td></tr> <tr><td>liujinzhong29</td><td>25</td><td>男</td><td>山西呂梁</td></tr> <tr><td>liujinzhong30</td><td>25</td><td>男</td><td>山西呂梁</td></tr> <tr><td>liujinzhong31</td><td>25</td><td>男</td><td>山西呂梁</td></tr> <tr><td>liujinzhong32</td><td>25</td><td>男</td><td>山西呂梁</td></tr> <tr><td>liujinzhong33</td><td>25</td><td>男</td><td>山西呂梁</td></tr> <tr><td>liujinzhong34</td><td>25</td><td>男</td><td>山西呂梁</td></tr> <tr><td>liujinzhong35</td><td>25</td><td>男</td><td>山西呂梁</td></tr> <tr><td>liujinzhong36</td><td>25</td><td>男</td><td>山西呂梁</td></tr> <tr><td>liujinzhong37</td><td>25</td><td>男</td><td>山西呂梁</td></tr> <tr><td>liujinzhong38</td><td>25</td><td>男</td><td>山西呂梁</td></tr> <tr><td>liujinzhong39</td><td>25</td><td>男</td><td>山西呂梁</td></tr> <tr><td>liujinzhong40</td><td>25</td><td>男</td><td>山西呂梁</td></tr> </table> <table width="60%" align="right"> <tr><td><div id="barcon" name="barcon"></div></td></tr> </table> </body> </html>

js 分頁

/**
 * 分頁函數
 * pno--頁數
 * psize--每頁顯示記錄數
 * 分頁部分是從真實數據行開始,因而存在加減某個常數,以確定真正的記錄數
 * 純js分頁實質是數據行全部加載,通過是否顯示屬性完成分頁功能
 **/
function goPage(pno,psize){
    var itable = document.getElementById("idData");
    var num = itable.rows.length;//表格所有行數(所有記錄數)
    console.log(num);
    var totalPage = 0;//總頁數
    var pageSize = psize;//每頁顯示行數
    //總共分幾頁 
    if(num/pageSize > parseInt(num/pageSize)){   
            totalPage=parseInt(num/pageSize)+1;   
       }else{   
           totalPage=parseInt(num/pageSize);   
       }   
    var currentPage = pno;//當前頁數
    var startRow = (currentPage - 1) * pageSize+1;//開始顯示的行  31 
       var endRow = currentPage * pageSize;//結束顯示的行   40
       endRow = (endRow > num)? num : endRow;    40
       console.log(endRow);
       //遍歷顯示數據實現分頁
    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 = ""+num+"條記錄 分"+totalPage+"頁 當前第"+currentPage+"";
    if(currentPage>1){
        tempStr += "<a href=\"#\" onClick=\"goPage("+(1)+","+psize+")\">首頁</a>";
        tempStr += "<a href=\"#\" onClick=\"goPage("+(currentPage-1)+","+psize+")\"><上一頁</a>"
    }else{
        tempStr += "首頁";
        tempStr += "<上一頁";    
    }

    if(currentPage<totalPage){
        tempStr += "<a href=\"#\" onClick=\"goPage("+(currentPage+1)+","+psize+")\">下一頁></a>";
        tempStr += "<a href=\"#\" onClick=\"goPage("+(totalPage)+","+psize+")\">尾頁</a>";
    }else{
        tempStr += "下一頁>";
        tempStr += "尾頁";    
    }

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

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js -- 分頁功能