JS 客户端 实现 无刷新分页 table表格实例
程序员文章站
2022-04-28 12:02:27
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问题：
实现如下功能需求
1.table 按行数 分页
2.js 实现客户端无刷新效果
3.分页脚注 比较美观
4.可扩展 维护性比较好
<html version="-//W3C//DTD HTML 4.01 Transitional//EN">
<head>
<style type="text/css">
.pg-normal {
color: black;
font-weight: normal;
text-decoration: none;
cursor: pointer;
}
.pg-selected {
color: black;
font-weight: bold;
text-decoration: underline;
cursor: pointer;
}
</style>
<script type="text/javascript" src="paging.js"></script>
</head>
<body>
<form action="" method="get" enctype="application/x-www-form-urlencoded">
<table id="results">
<tr>
<th>#</th>
<th>field</th>
</tr>
<tr>
<td>1</td>
<td><input type="text" name="field-name" value="rec1"></td>
</tr>
<tr>
<td>2</td>
<td><input type="text" name="field-name" value="rec2"></td>
</tr>
<tr>
<td>3</td>
<td><input type="text" name="field-name" value="rec3"></td>
</tr>
<tr>
<td>4</td>
<td><input type="text" name="field-name" value="rec4"></td>
</tr>
<tr>
<td>5</td>
<td><input type="text" name="field-name" value="rec5"></td>
</tr>
<tr>
<td>6</td>
<td><input type="text" name="field-name" value="rec6"></td>
</tr>
<tr>
<td>7</td>
<td><input type="text" name="field-name" value="rec7"></td>
</tr>
<tr>
<td>8</td>
<td><input type="text" name="field-name" value="rec8"></td>
</tr>
<tr>
<td>9</td>
<td><input type="text" name="field-name" value="rec9"></td>
</tr>
<tr>
<td>10</td>
<td><input type="text" name="field-name" value="rec10"></td>
</tr>
</table>
<div id="pageNavPosition"></div>
<div><input type="submit" onclick="alert('Hey, this is just a sample!'); return false;" /> <input type="reset" /></div>
</form>
<script type="text/javascript"><!--
var pager = new Pager('results', 3);
pager.init();
pager.showPageNav('pager', 'pageNavPosition');
pager.showPage(1);
//--></script>
</body>
</html>
function Pager(tableName, itemsPerPage) {
this.tableName = tableName;
this.itemsPerPage = itemsPerPage;
this.currentPage = 1;
this.pages = 0;
this.inited = false;
this.showRecords = function(from, to) {
var rows = document.getElementById(tableName).rows;
// i starts from 1 to skip table header row
for (var i = 1; i < rows.length; i++) {
if (i < from || i > to)
rows[i].style.display = 'none';
else
rows[i].style.display = '';
}
}
this.showPage = function(pageNumber) {
if (! this.inited) {
alert("not inited");
return;
}
var oldPageAnchor = document.getElementById('pg'+this.currentPage);
oldPageAnchor.className = 'pg-normal';
this.currentPage = pageNumber;
var newPageAnchor = document.getElementById('pg'+this.currentPage);
newPageAnchor.className = 'pg-selected';
var from = (pageNumber - 1) * itemsPerPage + 1;
var to = from + itemsPerPage - 1;
this.showRecords(from, to);
}
this.prev = function() {
if (this.currentPage > 1)
this.showPage(this.currentPage - 1);
}
this.next = function() {
if (this.currentPage < this.pages) {
this.showPage(this.currentPage + 1);
}
}
this.init = function() {
var rows = document.getElementById(tableName).rows;
var records = (rows.length - 1);
this.pages = Math.ceil(records / itemsPerPage);
this.inited = true;
}
this.showPageNav = function(pagerName, positionId) {
if (! this.inited) {
alert("not inited");
return;
}
var element = document.getElementById(positionId);
var pagerHtml = '<span onclick="' + pagerName + '.prev();" class="pg-normal"> « Prev </span> | ';
for (var page = 1; page <= this.pages; page++)
pagerHtml += '<span id="pg' + page + '" class="pg-normal" onclick="' + pagerName + '.showPage(' + page + ');">' + page + '</span> | ';
pagerHtml += '<span onclick="'+pagerName+'.next();" class="pg-normal"> Next »</span>';
element.innerHTML = pagerHtml;
}
}
如果要实现美观效果 可自己加入css
实例扩展如下
相应css代码
#pageNavPosition{
margin: 20px 0 0;
padding: 3px;
text-align: center;
}
.pg-normal {
border: 1px solid #DDDDDD;
cursor:pointer;
color: #61AF3F;
margin-left: 2px;
padding: 2px 5px;
text-decoration: none;
}
.pg-selected {
background-color: #A1D888;
border: 1px solid #B2E05D;
color: #638425;
padding: 2px 5px;
cursor:pointer;
}
