首页 / 脚本样式 / Ajax / 基于AJAX的分页类实现代码
复制代码 代码如下: /** * <p>pagination.js * <p>通用的基于AJAX的分页类 * @author jeanwendy * @version 1.0 */ var paginationIndex = 0; var pagination = function(trTemplatId) { $().ajaxStart(function() { $.blockUI({ message : "<table><tr><td style="vertical-align :bottom"><font size=2pt> 加载数据,请稍后...</font></td></tr></table>" }); }).ajaxStop($.unblockUI); paginationIndex = paginationIndex + 1; this.id = paginationIndex; this.trTemplatId = trTemplatId; this.pageNo = 1; this.pageSize = 10; this.beforeQuery = null; this.afterQuery = null; this.url = null; this.params = null; this.templat = null; this.childrenCount = null; this.setPageNo = function(pageNo) { if (pageNo != null) this.pageNo = pageNo; } this.setPageSize = function(pageSize) { if (pageSize != null) this.pageSize = pageSize; } this.setBeforeQuery = function(fn){ this.beforeQuery = fn; } this.setAfterQuery = function(fn){ this.afterQuery = fn; } this.load = function(url, params) { //初始化(只在第一次查询时执行) if(this.templat == null && this.childrenCount == null){ var templatObj = $("#"+this.trTemplatId); templatObj.parent().attr("id","tbody_id"+this.id); templatObj.removeAttr("id"); templatObj.wrap("<div id="divTemplat"></div>"); this.templat = $("#divTemplat").html(); $("#divTemplat").remove(); this.childrenCount = $("#tbody_id"+this.id).children().size(); } //开始查询 this.url = url; if(params == null) params = {}; $.extend(params,{pageNo:this.pageNo,pageSize:this.pageSize}); this.params = params; var thisObj = this; var options = { url : url, data : params, async : false, //采用同步方式请求 type : "POST", dataType : "json", error : function(xmlhttp, errInfo, e) { //请求出错处理:如:404等 if (xmlhttp.status == 200) alert("您已经很长时间没有访问网站,请退出后重新登陆!"); else alert("请求后台服务时发生错误:" + xmlhttp.status); }, success : function(data){ //删除上一次的数据 $("#tbody_id"+thisObj.id).children().filter(":gt("+(thisObj.childrenCount-1)+")").remove(); thisObj.pageList(data.data); thisObj.pageBar(data.total); if($.isFunction(thisObj.afterQuery)) thisObj.afterQuery(); } }; if($.isFunction(this.beforeQuery)) this.beforeQuery(); $.ajax(options); //发送请求 } this.pageList = function(data){ var filedArr = this.templat.match(/{[A-Za-z0-9_]+}/ig); for(var i = 0;i < data.length;i++){ var thisTemplat = this.templat; for(var j = 0;j < filedArr.length;j++){ var key = filedArr[j].substring(1,filedArr[j].length-1); if(key == "NO_"){ //序号标识 var value = (this.pageNo-1)*this.pageSize + i + 1; thisTemplat = thisTemplat.replace(new RegExp("{"+key+"}","gm"),value); }else{ var value = data[i][key]; if(typeof(value) != "undefined" && value == null) value = ""; thisTemplat = thisTemplat.replace(new RegExp("{"+key+"}","gm"),value); } } $(thisTemplat).appendTo($("#tbody_id"+this.id)); } } this.pageBar = function(total){ var templatObj = $(this.templat); var delChildren = templatObj.children(":gt(0)"); delChildren.remove(); templatObj.children().attr("colspan",$(this.templat).children().size()); templatObj.children().attr("align","right"); var pageCount; if(total % this.pageSize == 0) pageCount = total/this.pageSize; else pageCount = parseInt(total/this.pageSize) + 1; if(pageCount == 0) pageCount = 1; var toolbar = "第"+this.pageNo+"/"+pageCount+"页("+total+"条记录)"; if(this.pageNo == 1) toolbar = toolbar + " 首页 上页"; else toolbar = toolbar + " <a href="" id="firstPage"+this.id+"">首页</a> <a href="" id="prePage"+this.id+"">上页</a>"; if(this.pageNo == pageCount) toolbar = toolbar + " 下页 末页"; else toolbar = toolbar + " <a href="" id="nextPage"+this.id+"">下页</a> <a href="" id="lastPage"+this.id+"">末页</a>"; toolbar = toolbar + " 每页<input style="text-align:center;width:25px;height:20px;border:1 solid black" type="text" id="pageSize"+this.id+"" value="+this.pageSize+" />条"; toolbar = toolbar + " <input style="text-align:center;width:25px;height:20px;border:1 solid black" type="text" id="pageNo"+this.id+"" value="+this.pageNo+" />"; toolbar = toolbar + " <input style="height:20px;border:1 solid black" id="goPage"+this.id+"" type="button" value="GO">"; templatObj.children().html(toolbar); $(templatObj.wrap("<div></div>").parent().html()).appendTo($("#tbody_id"+this.id)); var thisObj = this; $("#firstPage"+thisObj.id).click(function(){ thisObj.pageNo = 1; thisObj.load(thisObj.url,thisObj.params); return false; }); $("#prePage"+thisObj.id).click(function(){ thisObj.pageNo = parseInt(thisObj.pageNo) - 1; thisObj.load(thisObj.url,thisObj.params); return false; }); $("#nextPage"+thisObj.id).click(function(){ thisObj.pageNo = parseInt(thisObj.pageNo) + 1; thisObj.load(thisObj.url,thisObj.params); return false; }); $("#lastPage"+thisObj.id).click(function(){ thisObj.pageNo = pageCount; thisObj.load(thisObj.url,thisObj.params); return false; }); $("#pageSize"+thisObj.id).keydown(function(e){ if(e.keyCode==13) { var v = $("#pageSize"+thisObj.id).val(); if(!isIntGreatZero(v) || v == "0"){ alert("您输入显示条数不合法,请重新输入!"); $("#pageSize"+thisObj.id).focus(); return; } if(v > 200){ alert("您输入显示条数过大了,请重新输入!"); $("#pageSize"+thisObj.id).focus(); return; } thisObj.pageNo = 1; thisObj.pageSize = v; thisObj.load(thisObj.url,thisObj.params); } }); $("#pageNo"+thisObj.id).keydown(function(e){ if(e.keyCode==13) { $("#goPage"+thisObj.id).triggerHandler("click"); } }); $("#goPage"+thisObj.id).click(function(){ var v = $("#pageNo"+thisObj.id).val(); if(!isIntGreatZero(v) || v == "0"){ alert("您输入页数不合法,请重新输入!"); $("#pageNo"+thisObj.id).focus(); return; } if(v > pageCount){ alert("您输入页数大于总页数,请重新输入!"); $("#pageNo"+thisObj.id).focus(); return; } thisObj.pageNo = v; thisObj.load(thisObj.url,thisObj.params); }); } } //true if the string is empty var isEmpty = function(text) { var isEmpty = true; for (var i = 0; i < text.length; i++) { if (text.charAt(i) != " ") { isEmpty = false; break; } } return isEmpty; } //true if the string is int and great than zero or equals zero var isIntGreatZero = function(str) { if (isEmpty(str)) return false; var temp1 = true; var temp2 = "0123456789"; for (var i = 0; i < str.length; i++) { var c = str.charAt(i); if (temp2.indexOf(c) == -1) { temp1 = false; break; } else { if (c == "0" && i == 0 && str.length > 1) { temp1 = false; break; } } } return temp1; }
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