js分页功能实现

实现一个js的分页并在弹出框中显示

1.分页插件使用：bootstarp-paginator.js,需要先引入bootstarp.js和jquery.js等；

!function($){"use strict";var BootstrapPaginator=function(element,options){this.init(element,options)},old=null;BootstrapPaginator.prototype={init:function(element,options){this.$element=$(element);var version=options&&options.bootstrapMajorVersion?options.bootstrapMajorVersion:$.fn.bootstrapPaginator.defaults.bootstrapMajorVersion,id=this.$element.attr("id");if(2===version&&!this.$element.is("div"))throw"in Bootstrap version 2 the pagination must be a div element. Or if you are using Bootstrap pagination 3. Please specify it in bootstrapMajorVersion in the option";if(version>2&&!this.$element.is("ul"))throw"in Bootstrap version 3 the pagination root item must be an ul element.";this.currentPage=1,this.lastPage=1,this.setOptions(options),this.initialized=!0},setOptions:function(options){this.options=$.extend({},this.options||$.fn.bootstrapPaginator.defaults,options),this.totalPages=parseInt(this.options.totalPages,10),this.numberOfPages=parseInt(this.options.numberOfPages,10),options&&"undefined"!=typeof options.currentPage&&this.setCurrentPage(options.currentPage),this.listen(),this.render(),this.initialized||this.lastPage===this.currentPage||this.$element.trigger("page-changed",[this.lastPage,this.currentPage])},listen:function(){this.$element.off("page-clicked"),this.$element.off("page-changed"),"function"==typeof this.options.onPageClicked&&this.$element.bind("page-clicked",this.options.onPageClicked),"function"==typeof this.options.onPageChanged&&this.$element.on("page-changed",this.options.onPageChanged),this.$element.bind("page-clicked",this.onPageClicked)},destroy:function(){this.$element.off("page-clicked"),this.$element.off("page-changed"),this.$element.removeData("bootstrapPaginator"),this.$element.empty()},show:function(page){this.setCurrentPage(page),this.render(),this.lastPage!==this.currentPage&&this.$element.trigger("page-changed",[this.lastPage,this.currentPage])},showNext:function(){var pages=this.getPages();pages.next&&this.show(pages.next)},showPrevious:function(){var pages=this.getPages();pages.prev&&this.show(pages.prev)},showFirst:function(){var pages=this.getPages();pages.first&&this.show(pages.first)},showLast:function(){var pages=this.getPages();pages.last&&this.show(pages.last)},onPageItemClicked:function(event){var type=event.data.type,page=event.data.page;this.$element.trigger("page-clicked",[event,type,page])},onPageClicked:function(event,originalEvent,type,page){var currentTarget=$(event.currentTarget);switch(type){case"first":currentTarget.bootstrapPaginator("showFirst");break;case"prev":currentTarget.bootstrapPaginator("showPrevious");break;case"next":currentTarget.bootstrapPaginator("showNext");break;case"last":currentTarget.bootstrapPaginator("showLast");break;case"page":currentTarget.bootstrapPaginator("show",page)}},render:function(){var containerClass=this.getValueFromOption(this.options.containerClass,this.$element),size=this.options.size||"normal",alignment=this.options.alignment||"left",pages=this.getPages(),listContainer=2===this.options.bootstrapMajorVersion?$("<ul></ul>"):this.$element,listContainerClass=2===this.options.bootstrapMajorVersion?this.getValueFromOption(this.options.listContainerClass,listContainer):null,first=null,prev=null,next=null,last=null,p=null,i=0;switch(this.$element.prop("class",""),this.$element.addClass("pagination"),size.toLowerCase()){case"large":case"small":case"mini":this.$element.addClass($.fn.bootstrapPaginator.sizeArray[this.options.bootstrapMajorVersion][size.toLowerCase()])}if(2===this.options.bootstrapMajorVersion)switch(alignment.toLowerCase()){case"center":this.$element.addClass("pagination-centered");break;case"right":this.$element.addClass("pagination-right")}for(this.$element.addClass(containerClass),this.$element.empty(),2===this.options.bootstrapMajorVersion&&(this.$element.append(listContainer),listContainer.addClass(listContainerClass)),this.pageRef=[],pages.first&&(first=this.buildPageItem("first",pages.first),first&&listContainer.append(first)),pages.prev&&(prev=this.buildPageItem("prev",pages.prev),prev&&listContainer.append(prev)),i=0;i<pages.length;i+=1)p=this.buildPageItem("page",pages[i]),p&&listContainer.append(p);pages.next&&(next=this.buildPageItem("next",pages.next),next&&listContainer.append(next)),pages.last&&(last=this.buildPageItem("last",pages.last),last&&listContainer.append(last))},buildPageItem:function(type,page){var itemContainer=$("<li></li>"),itemContent=$("<a></a>"),text="",title="",itemContainerClass=this.options.itemContainerClass(type,page,this.currentPage),itemContentClass=this.getValueFromOption(this.options.itemContentClass,type,page,this.currentPage),tooltipOpts=null;switch(type){case"first":if(!this.getValueFromOption(this.options.shouldShowPage,type,page,this.currentPage))return;text=this.options.itemTexts(type,page,this.currentPage),title=this.options.tooltipTitles(type,page,this.currentPage);break;case"last":if(!this.getValueFromOption(this.options.shouldShowPage,type,page,this.currentPage))return;text=this.options.itemTexts(type,page,this.currentPage),title=this.options.tooltipTitles(type,page,this.currentPage);break;case"prev":if(!this.getValueFromOption(this.options.shouldShowPage,type,page,this.currentPage))return;text=this.options.itemTexts(type,page,this.currentPage),title=this.options.tooltipTitles(type,page,this.currentPage);break;case"next":if(!this.getValueFromOption(this.options.shouldShowPage,type,page,this.currentPage))return;text=this.options.itemTexts(type,page,this.currentPage),title=this.options.tooltipTitles(type,page,this.currentPage);break;case"page":if(!this.getValueFromOption(this.options.shouldShowPage,type,page,this.currentPage))return;text=this.options.itemTexts(type,page,this.currentPage),title=this.options.tooltipTitles(type,page,this.currentPage)}return itemContainer.addClass(itemContainerClass).append(itemContent),itemContent.addClass(itemContentClass).html(text).on("click",null,{type:type,page:page},$.proxy(this.onPageItemClicked,this)),this.options.pageUrl&&itemContent.attr("href",this.getValueFromOption(this.options.pageUrl,type,page,this.currentPage)),this.options.useBootstrapTooltip?(tooltipOpts=$.extend({},this.options.bootstrapTooltipOptions,{title:title}),itemContent.tooltip(tooltipOpts)):itemContent.attr("title",title),itemContainer},setCurrentPage:function(page){if(page>this.totalPages||1>page)throw"Page out of range";this.lastPage=this.currentPage,this.currentPage=parseInt(page,10)},getPages:function(){var totalPages=this.totalPages,pageStart=0===this.currentPage%this.numberOfPages?(parseInt(this.currentPage/this.numberOfPages,10)-1)*this.numberOfPages+1:parseInt(this.currentPage/this.numberOfPages,10)*this.numberOfPages+1,output=[],i=0,counter=0;for(pageStart=1>pageStart?1:pageStart,i=pageStart,counter=0;counter<this.numberOfPages&&totalPages>=i;i+=1,counter+=1)output.push(i);return output.first=1,output.prev=this.currentPage>1?this.currentPage-1:1,output.next=this.currentPage<totalPages?this.currentPage+1:totalPages,output.last=totalPages,output.current=this.currentPage,output.total=totalPages,output.numberOfPages=this.options.numberOfPages,output},getValueFromOption:function(value){var output=null,args=Array.prototype.slice.call(arguments,1);return output="function"==typeof value?value.apply(this,args):value}},old=$.fn.bootstrapPaginator,$.fn.bootstrapPaginator=function(option){var args=arguments,result=null;return $(this).each(function(index,item){var $this=$(item),data=$this.data("bootstrapPaginator"),options="object"!=typeof option?null:option;if(!data)return data=new BootstrapPaginator(this,options),$this=$(data.$element),$this.data("bootstrapPaginator",data),void 0;if("string"==typeof option){if(!data[option])throw"Method "+option+" does not exist";result=data[option].apply(data,Array.prototype.slice.call(args,1))}else result=data.setOptions(option)}),result},$.fn.bootstrapPaginator.sizeArray={2:{large:"pagination-large",small:"pagination-small",mini:"pagination-mini"},3:{large:"pagination-lg",small:"pagination-sm",mini:""}},$.fn.bootstrapPaginator.defaults={containerClass:"",size:"normal",alignment:"left",bootstrapMajorVersion:2,listContainerClass:"",itemContainerClass:function(type,page,current){return page===current?"active":""},itemContentClass:function(type,page,current){return""},currentPage:1,numberOfPages:5,totalPages:1,pageUrl:function(type,page,current){return null},onPageClicked:null,onPageChanged:null,useBootstrapTooltip:!1,shouldShowPage:function(type,page,current){var result=!0;switch(type){case"first":result=1!==current;break;case"prev":result=1!==current;break;case"next":result=current!==this.totalPages;break;case"last":result=current!==this.totalPages;break;case"page":result=!0}return result},itemTexts:function(type,page,current){switch(type){case"first":return"&lt;&lt;";case"prev":return"&lt;";case"next":return"&gt;";case"last":return"&gt;&gt;";case"page":return page}},tooltipTitles:function(type,page,current){switch(type){case"first":return"Go to first page";case"prev":return"Go to previous page";case"next":return"Go to next page";case"last":return"Go to last page";case"page":return page===current?"Current page is "+page:"Go to page "+page}},bootstrapTooltipOptions:{animation:!0,html:!0,placement:"top",selector:!1,title:"",container:!1}},$.fn.bootstrapPaginator.Constructor=BootstrapPaginator}(window.jQuery);

2、初始化配置：

pagination : {
        currentPage : 1,
        start : 0,
        number : 20,
        totalCount : 0,
        totalPages : 0,
        numberOfPages : 0,
        bootstrapMajorVersion:3
    }

其中 bootstrapMajorVersion的值需要根据实际情况配置；

3、列表展示实现：

    var clips = mobject.list;
    var assets = '';
    for(var i=0;i<clips.length;i++){
        var clip = clips[i];
        var icon = '';
        var duration = '';
        assets+='<li"><div class="row">
                    <input type="checkbox" style="float:left">
                    <span class="col-md-11 name">'+icon+'</span>
                    <span class="col-md-3 caption">大小：'+clip.size.toStorageString()+'</span>
                    <span class="col-md-2 caption">时长：'+duration+' </span>
                    <span class="col-md-5 caption">创建日期：'+clip.createdTime.formatDate("yyyy-MM-dd hh:mm:ss")+'</span>
                </div></li>';
    }
    $('.clip-items>ul').html(assets);
    
    var page = '<ul class="pagination"></ul>
        <div class="footer-center">共<span>'+pagination.numberOfPages+'</span> 页/共
        <span>'+pagination.totalCount+'</span> 条</div>
    <div class="footer-right">每页显示
        <select id="pageSize" onchange="sizeChange()">
            <option value="10">10</option>
            <option value="20">20</option>
            <option value="30">30</option>
            <option value="40">40</option>
            <option value="50">50</option>
        </select>
    </div>';
    $('.page-footer').html(page);
    $('#pageSize').val(pagination.number);
    
    //分页需要totalPages属性
    pagination.totalPages =pagination.numberOfPages;
pagination.numberOfPages = 5;
    pagination.onPageClicked = function(event, originalEvent, type, page){
        pagination.currentPage = page;
        refresh();
    }
    $('.pagination').bootstrapPaginator(pagination);
    
}

    sizeChange:function(){
        pagination.number = $('#pageSize').val();
        refresh();
    }