我在我的应用程序中使用以下 javascript 显示分页,它对我来说工作正常,但我需要在 5 页后打破分页
这是我现有的分页
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
但我需要通过以下方式显示分页
1
2
3
4
5
......15
16
17
18
19
20
如果我点击第 5 页,那么它应该向当前页面添加另外 5 页
我的 Javscript 是这样的
<script type="text/javascript">
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"> <img src="${ctx}/images/prev.PNG" alt=" « Prev" height="17px" width="26px" style="vertical-align: middle;"/> </span> ';
for (var page = 1; page <= this.pages; page++)
pagerHtml += '<span id="pg' + page + '" class="pg-normal" onclick="' + pagerName + '.showPage(' + page + ');">' + page + '</span> ';
pagerHtml += '<span onclick="'+pagerName+'.next();" class="pg-normal"> <img src="${ctx}/images/nexts.png" alt="Next »" height="17px" width="26px" style="vertical-align: middle;"/></span>';
element.innerHTML = pagerHtml;
}
}
</script>
如有任何建议,将不胜感激
这里是 JSfiddle
最佳答案
这是一个新的 jsfiddle 做你想做的事:
showPageNav 函数已更改如下:
this.showPageNav = function(pagerName, positionId) {
var pageIndex = this.currentPage,
pageCount = this.pages,
start = Math.max(1, pageIndex - 4),
end = Math.min(pageCount, pageIndex + 4),
start2 = pageCount-4,
end2 = pageCount;
if (start2 <= end)
end = pageCount;
if (! this.inited) {
alert("not inited");
return;
}
var element = document.getElementById(positionId);
var pagerHtml = '';
// adds the Prev button only if needed
if (pageIndex > 1)
pagerHtml = '<span onclick="' + pagerName + '.prev();" class="pg-normal"> « Prev </span> ';
// paging from 1 to 5
for (var page = start; page <= end; page++) {
pagerHtml += '<span id="pg' + page + '" class="pg-normal" onclick="' + pagerName + '.showPage(' + page + ');">' + page + '</span> ';
}
// paging from pageCount-5 to pageCount
if (end != pageCount) {
pagerHtml += '<span>...</span>';
for (var page = start2; page <= end2; page++) {
pagerHtml += '<span id="pg' + page + '" class="pg-normal" onclick="' + pagerName + '.showPage(' + page + ');">' + page + '</span> ';
}
}
// adds the Next button only if needed
if (pageIndex < pageCount && pageCount > 1)
pagerHtml += '<span onclick="'+pagerName+'.next();" class="pg-normal"> Next »</span>';
element.innerHTML = pagerHtml;
}
关于javascript - 分页不起作用 :,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/18417075/