JS realizes the front-end paging effect

This article example shares the specific code of JS to achieve the front-end paging effect for your reference. The specific content is as follows

1. HTML part

<!doctype html>
<html>
<head>
 <meta charset='utf-8'>
    <script src="js/jquery.js"></script>
 <style type="text/css">
  a{text-decoration: none;}
  table {border-collapse:collapse;width: 100%;font-size: 14px;}
  th{background-color: #ddd;}
  table, td, th {border:1px solid #e7e8ec;}
  th,tr{height: 40px;}
  td {text-align: center;}
  tr:hover{background-color: #f9f4f3;}
  .barcon {width: 1000px;margin: 0 auto;text-align: center;}
  .barcon2 {float: right;}
  .barcon2 ul {margin: 20px 0;padding-left: 0;list-style: none;text-align: center;}
  .barcon2 li {display: inline;}
  .barcon2 a {font-size: 16px;font-weight: normal;display: inline-block;padding: 5px;padding-top: 0;color: black;border: 1px solid #ddd;background-color: #fff;}
  .barcon2 a:hover{background-color: #eee;}
  .ban {opacity: .4;}
 </style>
</head>
<body>
<table width="950" cellpadding="0" cellspacing="0" class="table2" align="center">
 <thead>
 <tr align="center">
  <th width="150" height="33" class="td2">Serial number</th>
  <th width="300" class="td2">Username</th>
  <th width="250" class="td2">Permissions</th>
  <th width="250" class="td2">Operation</th>
 </tr>
 </thead>
 <tbody id="myTable">
 <tr align="center">
  <td class="td2" height="33" width="150">1</td>
  <td class="td2" >admin</td>
  <td class="td2" >Administrator</td>
  <td class="td2" ><a href="###" >Modify</a></td>
 </tr>
 </tbody>
</table>
<div id="barcon" class="barcon" >
 <div id="barcon2" class="barcon2">
  <ul>
   <li><a href="###" id="prePage">Previous page</a></li>
   <li id="barcon1"></li>
   <li><a href="###" id="nextPage">Next page</a></li>
   <li><input type="text" id="num" size="2" oninput="value=value.replace(/[^\d]/g,'')"></li>
   <li><a href="###" id="jumpPage" onclick="jumpPage()">Jump</a></li>
  </ul>
 </div>
</div>
</body>
</html>

2. JS Logic

<script>
     // Initialize data function dynamicAddUser(num){
        for(var i=1;i<=num;i++)
        {
            var trNode = document.createElement("tr");
            $(trNode).attr("align","center");
            //Serial number var tdNodeNum = document.createElement("td");
            $(tdNodeNum).html(i+1);
            tdNodeNum.style.width = "150px";
            tdNodeNum.style.height = "33px";
            tdNodeNum.className = "td2";
            //User name var tdNodeName = document.createElement("td");
            $(tdNodeName).html("lzj"+i);
            tdNodeName.style.width = "300px";
            tdNodeName.className = "td2";
            //Permission var tdNodePri=document.createElement("td");
            tdNodePri.style.width = "250px";
            tdNodePri.className = "td2";
            var priText = document.createElement("span");
            $(priText).css({"display":"inline-block","text-align":"center"});
            $(priText).text("Ordinary user");
            tdNodePri.appendChild(priText);
            //Operation var tdNodeOper = document.createElement("td");
            tdNodeOper.style.width = "170px";
            tdNodeOper.className = "td2";
            var editA = document.createElement("a");
            $(editA).attr("href", "###").text("Edit");
            $(editA).css({ display: "inline-block" });
            tdNodeOper.appendChild(editA);
 
            trNode.appendChild(tdNodeNum);
            trNode.appendChild(tdNodeName);
            trNode.appendChild(tdNodePri);
            trNode.appendChild(tdNodeOper);
            $("#myTable")[0].appendChild(trNode);
        }
    }
    $(function(){
        dynamicAddUser(80);
        goPage(1,10);
    })
 
    /**
     * Paging function * pno--page number * psize--number of records displayed per page * The paging part starts from the real data row, so there is a constant to add or subtract to determine the real number of records * Pure js paging is actually loading all data rows, and the paging function is completed by displaying attributes**/
    var pageSize=10;//Number of rows displayed per page var currentPage_=1;//Current page global variable, used to determine whether it is on the same page when jumping, if so, do not jump, otherwise jump.
    var totalPage; //Total number of pages function goPage(pno,psize){
        var itable = document.getElementById("myTable");
        var num = itable.rows.length; //Number of all rows in the table (number of all records)
 
        pageSize = psize; //Number of rows per page //Total number of pages if (num/pageSize > parseInt(num/pageSize)) {
            totalPage=parseInt(num/pageSize)+1;
        }else{
            totalPage=parseInt(num/pageSize);
        }
        var currentPage = pno; //Current page number currentPage_=currentPage;
        var startRow = (currentPage - 1) * pageSize+1;
        var endRow = currentPage * pageSize;
        endRow = (endRow > num)? num : endRow;
 
        $("#myTable tr").hide();
        for(var i=startRow-1;i<endRow;i++) {
            $("#myTable tr").eq(i).show();
        }
 
        var tempStr = currentPage+"/"+totalPage;
        document.getElementById("barcon1").innerHTML = tempStr;
 
        if(currentPage>1){
            $("#firstPage").on("click",function(){
                goPage(1,psize);
            }).removeClass("ban");
            $("#prePage").on("click",function(){
                goPage(currentPage-1,psize);
            }).removeClass("ban");
        }else{
            $("#firstPage").off("click").addClass("ban");
            $("#prePage").off("click").addClass("ban");
        }
 
        if (currentPage < totalPage) {
            $("#nextPage").on("click",function(){
                goPage(currentPage+1,psize);
            }).removeClass("ban")
            $("#lastPage").on("click",function(){
                goPage(totalPage,psize);
            }).removeClass("ban")
        }else{
            $("#nextPage").off("click").addClass("ban");
            $("#lastPage").off("click").addClass("ban");
        }
    }
 
    function jumpPage() {
        var num = parseInt($("#num").val());
        if(num != currentPage_ && !isNaN(num) && num <= totalPage && num > 0) {
            goPage(num,pageSize);
        }
    }
</script>

The effect is as shown below:

The above is the full content of this article. I hope it will be helpful for everyone’s study. I also hope that everyone will support 123WORDPRESS.COM.

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