Detailed explanation of jQuery encapsulated paging component

Since the project needed to achieve the paging effect, I searched for it in the jQuery plug-in library, but I couldn’t find the effect I wanted, so I encapsulated a paging component myself. This article mainly introduces the paging component based on jQuery encapsulation in detail. It has certain reference value. Interested friends can refer to it. I hope it can help everyone.

Idea:

Mainly based on the paging template established based on the prototype during initialization and then binding dynamic events to achieve the paging effect of refreshing the DOM.

1.page.init.css

@charset "utf=8";
*{
 box-sizing: border-box;
 padding: 0;
 margin: 0;
}
.page{
 font-size: 13px;
 text-align: right;
}
.page .page_to{
 display: inline-block;
 max-width: 250px;
}
.page .page_to li{
 display: inline-block;
 width: auto;
 height: auto;
 border: 1px solid #ddd;
 padding:5px 10px;
 border-left-width: 0;
 color: #323232;
 cursor: pointer;
}
.page .page_to li.page_hide{
 display: none;
}
.page .page_to li:hover{
 color: #32C2CD;
 background-color: #f4f4f4;
 border-color: #DDDDDD;
}
.page .page_to li:first-child{
 border-left-width: 1px;
}
.page .page_jump{
 display: inline-block;
 width: 180px;
}
.page .page_jump input.page_jump_input{
 width: 52px;
 height: 28px;
 text-align: center;
 text-decoration: none;
 background-color: #fff;
 border: 1px solid #ddd;
 margin:0 4px;
}
.page .page_jump input.page_jump_btn{
 display: inline-block;
 padding: 7px 20px;
 margin-left: 5px;
 font-size: 14px;
 font-weight: 400;
 line-height: 1.42857143;
 text-align: center;
 white-space: nowrap;
 vertical-align: middle;
 -ms-touch-action: manipulation;
 touch-action: manipulation;
 cursor: pointer;
 -webkit-user-select: none;
 -moz-user-select: none;
 -ms-user-select: none;
 user-select: none;
 border: 1px solid transparent;
 border-radius: 4px;
 background-color: #00BB9C;
 color: #FFFFFF;
 font-weight: bold;
}

2.pageInit.js

/**
 * Created: 2017/6/20.
 * author: Aaron
 * address: http://www.cnblogs.com/aaron-pan/
 */
(function($,window,undefined){

 var curPage='',
 //跳转是否有值
 jumpVal='',
 //从DOM中重新获取数据总数/总页数
 lists='',
 totals='',
 //是否返回值
 isTrue=false;

 var Page=function(opts){
 this.settings= $.extend({},Page.defaults,opts);
 curPage=this.settings.initPage;
 totals=this.settings.totalPages;
 jumpVal=this.settings.inputVal;
 this.init();
 };

 //默认配置
 Page.defaults={
 container:'.page',
 setPos:'body',
 totalPages:null,
 totalLists:null,
 initPage:1,
 inputVal:1,
 callBack:null
 };

 Page.prototype={
 init:function(){
  this.create();
 },
 create:function(){
  var _template=&#39;<p class="page">&#39;+
  &#39;<span class="page_details">&#39;+
  &#39;共<span class="page_num">&#39;+this.settings.totalLists+&#39;</span>条记录，&#39;+
  &#39;第<span class="page_current">&#39;+curPage+&#39;</span>/&#39;+
  &#39;<span class="page_size">&#39;+this.settings.totalPages+&#39;</span>页&#39;+
  &#39;</span>&#39;+
  &#39;<p class="page_to">&#39;+
  &#39;<ul class="flex_parent">&#39;+
  &#39;<li class="page_first flex_child">首页</li>&#39;+
  &#39;<li class="page_pre page_hide flex_child">« 上一页</li>&#39;+
  &#39;<li class="page_next flex_child">下一页 »</li>&#39;+
  &#39;<li class="page_last flex_child">末页</li>&#39;+
  &#39;</ul>&#39;+
  &#39;</p>&#39;+
  &#39;<p class="page_jump">&#39;+
  &#39;<span>第：<input type="number" class="page_jump_input" value="&#39;+this.settings.inputVal+&#39;">页</span>&#39;+
  &#39;<input type="button" class="page_jump_btn" value="Go">&#39;+
  &#39;</p>&#39;+
  &#39;</p>&#39;;
  $(this.settings.setPos).append(_template);
  this.refreshDom();
  this.bindEvent();
 },
 bindEvent:function(){
  var _this=this;
  //跳转首页
  $(this.settings.container).on("click",".page_first",function(){

  lists=$(_this.settings.container).find(".page_num").text();
  totals=$(_this.settings.container).find(".page_size").text();

  if($.isFunction(_this.settings.callBack)){
   curPage=1;
   isTrue=_this.settings.callBack(1);
   if(isTrue){
   _this.refreshDom();
   $(_this.settings.container).find(".page_current").text(1);
   $(_this.settings.container).find(".page_jump_input").val(curPage);
   }
  }
  });
  //跳转上一页
  $(this.settings.container).on("click",".page_pre",function(){

  lists=$(_this.settings.container).find(".page_num").text();
  totals=$(_this.settings.container).find(".page_size").text();

  if($.isFunction(_this.settings.callBack)){
   if(curPage>1){
   curPage=curPage-1;
   isTrue=_this.settings.callBack(curPage);
   if(isTrue){
    _this.refreshDom();
    $(_this.settings.container).find(".page_current").text(curPage);
    $(_this.settings.container).find(".page_jump_input").val(curPage);
   }
   }
  }
  });
  //跳转下一页
  $(this.settings.container).on("click",".page_next",function(){

  lists=$(_this.settings.container).find(".page_num").text();
  totals=$(_this.settings.container).find(".page_size").text();


  if($.isFunction(_this.settings.callBack)){
   if(curPage<totals){
   curPage=curPage+1;
   isTrue=_this.settings.callBack(curPage);
   if(isTrue){
    _this.refreshDom();
    $(_this.settings.container).find(".page_current").text(curPage);
    $(_this.settings.container).find(".page_jump_input").val(curPage);
   }
   }
  }
  });
  //跳转末页
  $(this.settings.container).on("click",".page_last",function(){

  lists=$(_this.settings.container).find(".page_num").text();
  totals=$(_this.settings.container).find(".page_size").text();

  if($.isFunction(_this.settings.callBack)){
   curPage=totals;
   isTrue=_this.settings.callBack(curPage);
   if(isTrue){
   _this.refreshDom();
   $(_this.settings.container).find(".page_current").text(totals);
   $(_this.settings.container).find(".page_jump_input").val(curPage);
   }
  }
  });
  //Go跳转
  $(this.settings.container).on("click",".page_jump_btn",function(){

  lists=$(_this.settings.container).find(".page_num").text();
  totals=$(_this.settings.container).find(".page_size").text();

  if($.isFunction(_this.settings.callBack)){
   jumpVal=Number($(_this.settings.container).find("input.page_jump_input").val());
   console.log(&#39;跳转的页数：&#39;+jumpVal+&#39;;跳转之前的页数：&#39;+curPage);
   if(jumpVal>=1 && jumpVal <=totals){
   curPage=jumpVal;
   isTrue=_this.settings.callBack(curPage);
   if(isTrue){
    _this.refreshDom();
    $(_this.settings.container).find(".page_current").text(curPage);
   }
   }else{
   jumpVal=curPage;
   }
  }
  });
 },
 refreshDom:function(){
  $(this.settings.container).find("li.flex_child").removeClass("page_hide");
  if(Number(totals)==1){
  $(this.settings.container).find(".page_pre").addClass("page_hide");
  $(this.settings.container).find(".page_next").addClass("page_hide");
  }
  else if(Number(totals)==2){
  if(Number(curPage)==1){
   $(this.settings.container).find(".page_pre").addClass("page_hide");
  }else{
   $(this.settings.container).find(".page_next").addClass("page_hide");
  }
  }
  else if(Number(curPage)==1 && Number(totals)>2){
  $(this.settings.container).find(".page_pre").addClass("page_hide");
  }
  else if(Number(curPage)==Number(totals) && Number(totals)>2){
  $(this.settings.container).find(".page_next").addClass("page_hide");
  }
 }
 };

 var pageInit=function(opts){
 return new Page(opts);
 };

 window.pageInit= $.pageInit=pageInit;

})(jQuery,window,undefined);

3. Component call

Paging component initialization can be completed through window.pageInit= $.pageInit=pageInit.

The exposed interfaces are:

1.container: DOM container, default.page

2.setPos: HTML position placed by DOM, default body

3.totalPages: Default number of pages, required, default null

4.totalLists: Default total number of data, required, default null

5.initPage: Current page ,Default first page

6.inputVal: Jump page, default first page

7.callBack: Executed callback function, required, default null

<!DOCTYPE html>
<html>
<head lang="en">
 <meta charset="UTF-8">
 <title>基于jQuery封装的分页组件</title>
 <link rel="stylesheet" href="css/page.init.css">
</head>
<body>
<script src="https://cdn.bootcss.com/jquery/2.2.4/jquery.js"></script>
<script src="js/pageInit.js"></script>
<script>
 $.pageInit(
  {
  container:&#39;.page&#39;,//容器：默认page
  //setPos:&#39;body&#39;,//放置位置：默认body
  totalPages:10,//总页数：必填
  totalLists:100,//数据总数：必填
  initPage:1,//初始页码：默认1
  inputVal:1,//设置跳转的input值：默认1
  //要执行的函数：默认null，必须为fn且返回true则可执行分页，false则不执行
  callBack:function(n){
   var flag=true;
   console.log(n);
   return flag;
  }
  }
 );
</script>
</body>
</html>

Effect:

Add the function function you need to execute through the callBack interface, and only perform dynamic DOM rendering when true is required.

#For more exciting content, please click: jquery paging function summary to learn.

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