接下来，看Dojo分页的页面展示代码，这些代码显示了页面的结构。

<div class="ecm ecmUnifySearchPagination" data-dojo-attach-point="ecmUnifySearchPagination"> 
    <div style="display: inline-block;text-align: center;" >
        <div class="pgPrevIoUs" style="display: inline-block">
            <a href="#" data-dojo-attach-point="btnPrev" 
                data-dojo-props='iconClass: "ecmIconPrevIoUs",showLabel: true'
                data-dojo-attach-event="onclick: _onPrevButtonClick">${resourceBundle.prevIoUs}</a>
        </div>
        <div class="pgFirst" style="display: inline-block;">
            <a href="#" data-dojo-attach-point="btnFirst" 
                data-dojo-attach-event="onclick: _onFirstClick">1</a>
        </div>
        <div class="pageNumber" style="display: inline-block">
            <span data-dojo-attach-point="pageNumber"></span>
        </div>
        <div class="pgNext" style="display: inline-block">
            <a href="#" data-dojo-attach-point="btnNext" 
                data-dojo-props='iconClass: "ecmIconNext",showLabel: true'
                data-dojo-attach-event="onclick: _onNextButtonClick">${resourceBundle.next}</a>
        </div>
    </div>    
</div>

　　单单这些HTML代码，我们看不出分页具体是如何做的，接下来看后台是如何通过JS控制界面分页数据的展示的。

setButtonStatus : function(value) { 
        this.destroyOldPager();
        if (value) {
            dojo.style(this.ecmUnifySearchPagination,"visibility","visible");
            this._currentPageIndex = value.currentPageIndex;
            this._totalPages = value.totalPages;
            this._totalNum = value.totalNum;
            if (this._totalNum == 0) {                
                dojo.style(this.btnFirst,"display","none");
                dojo.style(this.btnPrev,"none");
                dojo.style(this.btnNext,"none");            } 
            else if (this._currentPageIndex == 1 && this._totalPages == 0) {
                dojo.style(this.btnFirst,"none");            } 
            else if (this._currentPageIndex == 1 && this._totalPages == 1) {
                dojo.style(this.btnFirst,"none");
                this.noResultInfo.innerHTML = "";
                dojo.style(this.btnPrev,"none");            } 
            else if (this._currentPageIndex == 1 && this._totalPages <= 10 && this._totalPages > 0) {
                // 首页选中
                dojo.style(this.btnFirst,"block");
                var startPageNo = 1;
                var endPageNo = value.totalPages;
                this.createCurrentPageNo(startPageNo,endPageNo);
            } else if (this._currentPageIndex == 1 && this._totalPages > 10) {
                // 首页选中
                dojo.style(this.btnFirst,"block");
                var startPageNo = 1;
                var endPageNo = 10;
                this.createCurrentPageNo(startPageNo,endPageNo);
            } else if (this._currentPageIndex == this._totalPages && this._totalPages > 10) {
                // 尾页选中
                dojo.style(this.btnFirst,"block");
                this.noResultInfo.innerHTML = "";
                dojo.style(this.btnPrev,"block");
                dojo.style(this.btnNext,"none");
                var startPageNo = this._totalPages - 9;
                var endPageNo = value.totalPages;
                this.createCurrentPageNo(startPageNo,endPageNo);
            } else if (this._currentPageIndex <= 5 && this._totalPages >= 10) {
                this._showNavgination();
                var startPageNo = 2;
                var endPageNo = 10;
                this.createCurrentPageNo(startPageNo,endPageNo);
            } else if (this._totalPages <= 10 && this._currentPageIndex != this._totalPages && this._totalPages > 0) {
                this.noResultInfo.innerHTML = "";
                this._showNavgination();
                var startPageNo = 1;
                var endPageNo = this._totalPages;
                this.createCurrentPageNo(startPageNo,endPageNo);
            } else if (this._totalPages <= 10 && this._currentPageIndex == this._totalPages) {
                dojo.style(this.btnPrev,"none");
                var startPageNo = 1;
                var endPageNo = this._totalPages;
                this.createCurrentPageNo(startPageNo,endPageNo);
            } else if (this._currentPageIndex > 5 && this._totalPages - this._currentPageIndex >= 4) {
                this._showNavgination();
                var startPageNo = this._currentPageIndex - 4;
                var endPageNo = this._currentPageIndex + 4;
                this.createCurrentPageNo(startPageNo,endPageNo);            } 
            else if (this._totalPages > 10 && this._totalPages - this._currentPageIndex < 4) {
                this._showNavgination();
                var startPageNo = this._totalPages - 9;
                var endPageNo = this._totalPages;
                this.createCurrentPageNo(startPageNo,endPageNo);
            }
        }
    },destroyOldPager : function() { 
        var childrenNum = this.pageNumber.children.length;
        for ( var i = childrenNum; i > 0; i--) {
            dojo.destroy(this.pageNumber.children[i - 1]);
        }
    },createCurrentPageNo : function(startPage,endPage) {
        for ( var i = startPage; i <= endPage; i++) {
            var pageNum = {
                pageNo : i
            };
            var dijit = new com.CrossITWorld.widget.dm.searchuse.pagination.dijit.PageNumber(pageNum);
            dijit.loadPageNumber(pageNum);
            if (this._currentPageIndex == i) {
                dijit.addCurrentPageStyle();
            }
            dojo.connect(dijit,"onShowCurrentPage",this,this._onShowCurrentPage);
            this.pageNumber.appendChild(dijit.domNode);
        }
    },_showNavgination : function() {
        dojo.style(this.btnFirst,"block");
        dojo.style(this.btnPrev,"block");
        dojo.style(this.btnNext,"block");
    },

　　上面代码的主要原理是，在后端返回给前端数据之后，前端根据当前页索引，总页数计算需要显示首页、上一页、尾页以及页码等。在进行页面显示之前，需要先清除原来的页码，以免影响新页码的展示。在createCurrentPageNo中，var dijit = new com.CrossITWorld.widget.dm.searchuse.pagination.dijit.PageNumber(pageNum);只是动态创建一个页码（1,2,3...），这样我们就可以根据自己的喜欢的样式创建页码，而且如果将页码数字更改为第X页，也比较容易，具有良好的扩展性。