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Bootstrap implements page turning effect

小云云
小云云Original
2017-12-07 15:56:432649browse

Bootstrap, from Twitter, is a very popular front-end framework. Bootstrap is based on HTML, CSS, and JavaScript. It is simple and flexible, making web development faster. This article mainly introduces Bootstrap to achieve page turning effect in detail, which has certain reference value. Interested friends can refer to it.

Advantages:

Supports partial refresh;
As long as it is a list, the component can be loaded;
Supports dynamic data binding;
Of course And absolutely simple and practical.

Rendering

At the last page:

Bootstrap implements page turning effect

At the first page:

Implementation

①、Layout of page turning component


<%@ page language="java" contentType="text/html; charset=utf-8" pageEncoding="utf-8"%>
<%@ include file="/components/common/taglib.jsp"%>


<c:if test="${urlParas == null}">
 <c:set var="urlParas" value="" />
</c:if>
<c:if test="${(totalPage > 0) && (currentPage <= totalPage)}">
 <c:set var="startPage" value="${currentPage - 4}" />
 <c:if test="${startPage < 1}">
 <c:set var="startPage" value="1" />
 </c:if>
 <c:set var="endPage" value="${currentPage + 4}" />
 <c:if test="${endPage > totalPage}">
 <c:set var="endPage" value="totalPage" />
 </c:if>

 <nav>
 <ul class="pager">
  <c:if test="${currentPage <= 8}">
  <c:set var="startPage" value="1" />
  </c:if>

  <c:if test="${(totalPage - currentPage) < 8}">
  <c:set var="endPage" value="${totalPage}" />
  </c:if>

  <c:choose>
  <c:when test="${currentPage == 1}">
   <li class="previous disabled"><a>
    <span aria-hidden="true">←</span>
    前一页
   </a></li>
  </c:when>
  <c:otherwise>
   <li class="previous"><a href="javascript:;" pageNum="${currentPage - 1}" rel="${rel}" urlParas="${urlParas}">
    <span aria-hidden="true">←</span>
    前一页
   </a></li>
  </c:otherwise>
  </c:choose>

  <c:choose>
  <c:when test="${currentPage == totalPage}">
   <li class="next disabled"><a>
    后一页
    <span aria-hidden="true">→</span>
   </a></li>
  </c:when>
  <c:otherwise>
   <li class="next"><a href="javascript:;" pageNum="${currentPage + 1}" rel="${rel}" urlParas="${urlParas}">
    后一页
    <span aria-hidden="true">→</span>
   </a></li>
  </c:otherwise>
  </c:choose>

 </ul>
 </nav>
</c:if>


  • pageNum: which page

  • rel: which p’s id to refresh

  • urlParas: Other parameters

##②、Call the page turning component


<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<%@ page language="java" contentType="text/html; charset=utf-8" pageEncoding="utf-8"%>
<%@ include file="/components/common/taglib.jsp"%>

<c:set var="currentPage" value="${dealPage.pageNumber}" />
<c:set var="totalPage" value="${dealPage.totalPage}" />
<c:set var="rel" value="deal_items" />
<c:set var="urlParas" value="" />

<%@ include file="/components/common/paginate.jsp"%>


  • currentPage: page number

  • totalPage: total page number

  • rel: id of partial refresh p

  • urlParas: Other parameters, none


③、Page turning event


$(function() {
// 翻页组件
 $("ul[class=pager] li:not(.disabled) > a", $p).each(function() {
 $(this).click(function(event) {
  var $this = $(this);
  YUNM.debug($this.attr("pageNum") + "、" + $this.attr("rel") + "、" + $this.attr("urlParas"));

  var pageNum = $this.attr("pageNum");
  // 准备翻页事件
  if (pageNum && pageNum.isPositiveInteger()) {
  yunmPageBreak({
   rel : $this.attr("rel"),
   data : {
   pageNum : pageNum,
   urlParas : $this.attr("urlParas")
   }
  });
  }

  event.preventDefault();
  return false;
 });
 });
});


  • After the page is loaded, obtain the page-turning a tag and load the page-turning function for it.

  • Set pageNum, this must be passed

  • to get the partial refresh p. This place needs to be improved in the future. It seems not good to get it through id.

  • Pass extra parameters urlParas

  • Finally prevent existing events of a tag.



/**
 * 翻页
 * 
 * @param options
 */
function yunmPageBreak(options) {
 var op = $.extend({
 rel : "",
 data : {
  pageNum : "",
  numPerPage : "",
  orderField : "",
  orderDirection : "",
  urlParas : ""
 },
 callback : null
 }, options);

 var $panel = $("#" + op.rel);
 if (op.rel) {
 var dataId = $panel.attr("data");

 var url = $panel.attr("url");

 // 设置p上的其他参数
 if (dataId) {
  if (dataId.indexOf(",") != -1) {
  $.each(dataId.split(","), function(index, id) {
   if ($("#" + id) && $("#" + id).val()) {

   url = addMoreParamForUrl(url, id, $("#" + id).val());
   }
  });
  } else {
  if ($("#" + dataId) && $("#" + dataId).val()) {
   url = addMoreParamForUrl(url, dataId, $("#" + dataId).val());
  }
  }
 }

 // 局部刷新
 $panel.ajaxUrl({
  type : "POST",
  url : url,
  data : op.data,
  callback : function(response) {
  if ($.isFunction(op.callback))
   op.callback(response);
  }
 });
 }
}


    ##This string of code is also easy to understand, get ajax Requested url
  • Get the parameter data of ajax request
  • As for the ajaxUrl method, please refer to my talk about ajax partial refresh, I think this is Partial refresh is still very practical.

  • At this point, the content at the front desk is OK, what is needed next? Naturally, it is the data acquisition on the jfinal side.

④. Paging data acquisition

public Page<Deals> paginateCreateDealsByUid(int pageNumber, int pageSize, Long uid) {

 Page<Deals> deals = paginate(pageNumber, pageSize, "select y.*",
  "from ym_dels y where y.uid = ? order by y.opertime desc", uid);

 return deals;
}


    jfinal has naturally provided a very good Page turning function paginate method.
  • Just need to return the corresponding data.
  • Related recommendations:

How to handle bootstrap Table server-side paging

Asking for PHP+SQLServer translation Page effect, how to deal with it

Simple creation of HTML5 page turning effect text effects

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