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瀑布流 结合 懒加载 操作实例
<html><head> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /> <meta name="viewport" content="width=device-width,initial-scale=1.0, minimum-scale=1.0, maximum-scale=1.0,user-scalable=no" /> <meta name="apple-mobile-web-app-capable" content="yes" /> <meta name="apple-mobile-web-app-status-bar-style" content="black" /> <title></title> <script src=http://www.mamicode.com/"../Scripts/jquery-1.7.2.min.js" type="text/javascript"></script> <script src=http://www.mamicode.com/"../Scripts/Jquerymobile/lazyload/jquery.lazyload.js" type="text/javascript"></script> <style type="text/css"> * { margin: 0; padding: 0; text-decoration: none; list-style-type: none; font-family: "Microsoft YaHei" ,sans-serif,serif; font-size: 1em; } body, div { margin: 0; padding: 0; } img { border: 0; } .clearFloat:after { content: "."; display: block; height: 0; clear: both; visibility: hidden; } .noDisplay { display: none; } .position_r { position: relative; } .item_1 { width: 100%; float: left; overflow: hidden; } .item_1_s { background-color: #FFFFFF; border: 5px solid #fff; width: 91%; margin: 5px auto; font-size: 1em; box-shadow: 1px 1px 1px #aaa; } .item_1 img { width: 100%; } .item_1 .item_title { color: rgb(43,45,44); width: 100%; } .item_1 .item_title a { color: rgb(43,45,44); } .item_1 .item_price { zoom: 1; } .item_1 .item_price span { display: inline-block; } .item_1 .item_price .price_1 { color: rgb(183,18,21); } .item_1 .item_price .price_2 { margin-left: 10px; font-size: 0.7em; text-decoration: line-through; color: rgb(146, 146, 146); } .item_fx { } .info { font-size: 1.3em; text-align: left; } .zk { display: block; padding: 2px 5px; font-size: 0.6em; background-color: #BD0000; color: #FFFFFF; position: absolute; top: 0; right: 0; } .s1 { font-size: 0.7em; } .contentBg { background-color: #eaecef; } .dataInfo { color: #B5AD7E; white-space: nowrap; overflow: hidden; } .dataInfo div { display: inline-block; clear: none; height: 35px; } .weekInfo { width: 60px; font-size: 1em; white-space: normal; } .weekInfo span { width: 100%; display: inline-block; } </style> <script type="text/javascript"> /** ************************************************************ **** 瀑布流 ************************************************************ */ (function ($) { var //参数 setting = { column_width: 150, //列宽 column_className: ‘waterfall_column‘, //列的类名 column_space: 10, //列间距 cell_selector: ‘.cell‘, //要排列的砖块的选择器，context为整个外部容器 img_selector: ‘img‘, //要加载的图片的选择器 auto_imgHeight: true, //是否需要自动计算图片的高度 fadein: true, //是否渐显载入 fadein_speed: 600, //渐显速率，单位毫秒 insert_type: 1, //单元格插入方式，1为插入最短那列，2为按序轮流插入 getResource: function (index) { } //获取动态资源函数,必须返回一个砖块元素集合,传入参数为加载的次数 }, // waterfall = $.waterfall = {}, //对外信息对象 $container = null; //容器 waterfall.load_index = 1, //加载次数 $.fn.extend({ waterfall: function (opt) { opt = opt || {}; setting = $.extend(setting, opt); $container = waterfall.$container = $(this); waterfall.$columns = creatColumn(); render($(this).find(setting.cell_selector).detach(), false); //重排已存在元素时强制不渐显 waterfall._scrollTimer2 = null; $(window).bind(‘scroll‘, function () { clearTimeout(waterfall._scrollTimer2); waterfall._scrollTimer2 = setTimeout(onScroll, 300); }); waterfall._scrollTimer3 = null; $(window).bind(‘resize‘, function () { clearTimeout(waterfall._scrollTimer3); waterfall._scrollTimer3 = setTimeout(onResize, 300); }); } }); function creatColumn() {//创建列 waterfall.column_num = calculateColumns(); //列数 //循环创建列 var html = ‘‘; for (var i = 0; i < waterfall.column_num; i++) { html += ‘<div class="‘ + setting.column_className + ‘" style="width:‘ + setting.column_width + ‘px; display:inline-block; *display:inline;zoom:1; margin-left:‘ + setting.column_space / 2 + ‘px;margin-right:‘ + setting.column_space / 2 + ‘px; vertical-align:top; overflow:hidden"></div>‘; } $container.prepend(html); //插入列 return $(‘.‘ + setting.column_className, $container); //列集合 } function calculateColumns() {//计算需要的列数 var num = Math.floor(($container.innerWidth()) / (setting.column_width + setting.column_space)); if (num < 1) { num = 1; } //保证至少有一列 return num; } function render(elements, fadein) {//渲染元素 if (!$(elements).length) return; //没有元素 var $columns = waterfall.$columns; $(elements).each(function (i) { if (!setting.auto_imgHeight || setting.insert_type == 2) {//如果给出了图片高度，或者是按顺序插入，则不必等图片加载完就能计算列的高度了 if (setting.insert_type == 1) { insert($(elements).eq(i), setting.fadein && fadein); //插入元素 } else if (setting.insert_type == 2) { insert2($(elements).eq(i), i, setting.fadein && fadein); //插入元素 } return true; //continue } if ($(this)[0].nodeName.toLowerCase() == ‘img‘ || $(this).find(setting.img_selector).length > 0) {//本身是图片或含有图片 var image = new Image; var src = http://www.mamicode.com/$(this)[0].nodeName.toLowerCase() == ‘img‘ ? $(this).attr(‘src‘) : $(this).find(setting.img_selector).attr(‘src‘); image.onload = function () {//图片加载后才能自动计算出尺寸 image.onreadystatechange = null; if (setting.insert_type == 1) { insert($(elements).eq(i), setting.fadein && fadein); //插入元素 } else if (setting.insert_type == 2) { insert2($(elements).eq(i), i, setting.fadein && fadein); //插入元素 } image = null; } image.onreadystatechange = function () {//处理IE等浏览器的缓存问题：图片缓存后不会再触发onload事件 if (image.readyState == "complete") { image.onload = null; if (setting.insert_type == 1) { insert($(elements).eq(i), setting.fadein && fadein); //插入元素 } else if (setting.insert_type == 2) { insert2($(elements).eq(i), i, setting.fadein && fadein); //插入元素 } image = null; } } image.src = src; } else {//不用考虑图片加载 if (setting.insert_type == 1) { insert($(elements).eq(i), setting.fadein && fadein); //插入元素 } else if (setting.insert_type == 2) { insert2($(elements).eq(i), i, setting.fadein && fadein); //插入元素 } } }); } function public_render(elems) {//ajax得到元素的渲染接口 render(elems, true); } function insert($element, fadein) {//把元素插入最短列 if (fadein) {//渐显 $element.css(‘opacity‘, 0).appendTo(waterfall.$columns.eq(calculateLowest())).fadeTo(setting.fadein_speed, 1); } else {//不渐显 $element.appendTo(waterfall.$columns.eq(calculateLowest())); } $("img.lazy").lazyload({}); } function insert2($element, i, fadein) {//按序轮流插入元素 if (fadein) {//渐显 $element.css(‘opacity‘, 0).appendTo(waterfall.$columns.eq(i % waterfall.column_num)).fadeTo(setting.fadein_speed, 1); } else {//不渐显 $element.appendTo(waterfall.$columns.eq(i % waterfall.column_num)); } $("img.lazy").lazyload({}); } function calculateLowest() {//计算最短的那列的索引 var min = waterfall.$columns.eq(0).outerHeight(), min_key = 0; waterfall.$columns.each(function (i) { if ($(this).outerHeight() < min) { min = $(this).outerHeight(); min_key = i; } }); return min_key; } function getElements() {//获取资源 $.waterfall.load_index++; return setting.getResource($.waterfall.load_index, public_render); } waterfall._scrollTimer = null; //延迟滚动加载计时器 function onScroll() {//滚动加载 clearTimeout(waterfall._scrollTimer); waterfall._scrollTimer = setTimeout(function () { var $lowest_column = waterfall.$columns.eq(calculateLowest()); //最短列 var bottom = $lowest_column.offset().top + $lowest_column.outerHeight(); //最短列底部距离浏览器窗口顶部的距离 var scrollTop = document.documentElement.scrollTop || document.body.scrollTop || 0; //滚动条距离 // alert(‘scrollTop====‘+scrollTop); // alert(‘bottom====‘+bottom); var windowHeight = document.body.clientHeight || document.documentElement.clientHeight || 0; //窗口高度 //alert(‘windowHeight====‘+windowHeight); //alert(‘ccc====‘+(bottom - windowHeight)); if (scrollTop >= bottom - windowHeight) { render(getElements(), true); } if (scrollTop <= 0) { $("#DivLoading").fadeIn(2000); //setTimeout(‘jumpurl()‘, 3000); jumpurl(); } }, 100); } function onResize() {//窗口缩放时重新排列 if (calculateColumns() == waterfall.column_num) return; //列数未改变，不需要重排 var $cells = waterfall.$container.find(setting.cell_selector); waterfall.$columns.remove(); waterfall.$columns = creatColumn(); render($cells, false); //重排已有元素时强制不渐显 } })(jQuery); </script></head><body style="text-align: center;"> <div id="DivLoading"> <img alt="" style="font-size: 1.2em; font-family: 微软雅黑;" src="../Scripts/Jquerymobile/ref.jpg">正在加载... </div> <div id="container" style="width: 100%; margin: 0 auto; overflow: hidden;"> @{ if (_productList != null) { foreach (ProductInfoCDTO _product in _productList) { <div class="cell"> <div class="item_1" id="@(_product.ProductId)"> <div class="item_1_s"> <div class="position_r"> <img class="lazy" src=http://www.mamicode.com/"../Scripts/Jquerymobile/lazyload/grey.gif" data-original="@(_product.ImgUrl)" alt="" onclick="GoShoping(‘@(_product.ProductId)‘,‘@(_product.AdId)‘)" /> @{ string tempIntensity = string.Empty; if (_product.Intensity != 10) { tempIntensity = "<div class=\"zk\"> " + _product.Intensity + "折</div>"; } else { tempIntensity = " "; } } @(new HtmlString(tempIntensity)) </div> <div class="info"> <div class="item_title"> @(_product.ProductName)</div> <div class="item_price"> <span class="price_1">￥@(_product.ProductPrice)</span><span class="price_2">￥@(_product.Price)</span></div> <div class="item_fx"> @{ string tempRebate = string.Empty; if (_product.Rebate > 0) { tempRebate = "<div class=\"s1\">送金币" + _product.Rebate + "</div>"; } else { tempRebate = " "; } } @(new HtmlString(tempRebate))</div> <div class="clearFloat"> </div> </div> </div> </div> </div> } } } </div> <div id="TailDiv" style="display: none;"> 已经到尾部了</div> <input type="hidden" id="hidIsAnnon" value=http://www.mamicode.com/"@(ViewBag.isAnnon)" /> <input type="hidden" id="hidDeviceId" value=http://www.mamicode.com/"@(ViewBag.deviceId)" /> <input type="hidden" id="hidUserId" value=http://www.mamicode.com/"@(ViewBag.userId)" /> <input type="hidden" id="hidAppid" value=http://www.mamicode.com/"@(ViewBag.appid)" /></body></html><script type="text/javascript"> var template = ‘<div class="item_1" id="{Id}">‘ + ‘<div class="item_1_s">‘ + ‘<div class="position_r">‘ + ‘<img src="http://www.mamicode.com/{图片}" onclick="GoShoping(\‘{PId}\‘,\‘{AdId}\‘)"/>{折扣}‘ + ‘</div><div class="info">‘ + ‘<div class="item_title">{名称}</div>‘ + ‘<div class="item_price"><span class="price_1">￥{折扣价}</span><span class="price_2">￥{原价}</span></div>‘ + ‘<div class="item_fx">{送金币}</div>‘ + ‘<div class="clearFloat"></div>‘ + ‘</div></div>‘ + ‘</div>‘; var opt = { getResource: function (index, render) {//index为已加载次数,render为渲染接口函数,接受一个dom集合或jquery对象作为参数。通过ajax等异步方法得到的数据可以传入该接口进行渲染，如 render(elem) // alert(index); var _html = ‘‘; var postdata = http://www.mamicode.com/{ appId: $("#hidAppid").val(), userId: $("#hidUserId").val(), deviceId: $("#hidDeviceId").val(), isAnnon: $("#hidIsAnnon").val(), pageIndex: index, pageSize: 6}; $.ajax({ async: false, type: "POST", dataType: "json", url: "/GoodsWall/TempGetGoods?r="+Math.random(), data: postdata, success: function (data) { if (data) { for (var i = 0; i < data.length; i++) { var str = template; str = str.replace("{图片}", data[i].ImgUrl); str = str.replace("{名称}", data[i].ProductName); str = str.replace("{折扣价}", data[i].ProductPrice); str = str.replace("{原价}", data[i].Price); str = str.replace("{Id}", data[i].ProductId); str = str.replace("{PId}", data[i].ProductId); str = str.replace("{AdId}", data[i].AdId); if (data[i].Intensity != 10) { str = str.replace("{折扣}", ‘<div class="zk">‘ + data[i].Intensity + ‘折</div>‘); } else { str = str.replace("{折扣}", ‘‘); } if (data[i].Rebate > 0) { str = str.replace("{送金币}", ‘<span class="s1">送金币‘ + data[i].Rebate + ‘</span>‘); // } else { str = str.replace("{送金币}", ""); } _html += str; } if(_html==‘‘) { $("#TailDiv").show(); } else { $("#TailDiv").hide(); } } }, error: function (err) { } }); return $(_html); }, auto_imgHeight: true, insert_type: 1 } $(‘#container‘).waterfall(opt); $(function () { $("img.lazy").lazyload({ load: function () { $(‘#container‘).waterfall(opt); } }); $("#DivLoading").fadeOut(1000); }); function jumpurl() { location.reload(); } // 商品通道 function GoShoping(goodsId, adid) { var code = ""; var appId = getQueryString(‘appId‘); var userId = getQueryString(‘userId‘); var postData = http://www.mamicode.com/{ "adid": adid, "userID": userId, "goodsId": goodsId, "appId": appId }; $.ajax({ async: false, type: "POST", dataType: "json", url: "/GoodsWall/CreateCps", data: postData, success: function (data) { if (data) { code = data; } }, error: function (err) { } }); var url = "@Jinher.AMP.ADM.UI.Models.CustomConfigHelper.GetCustomConfig("CommodityDetail")" + "?userId=" + userId + "&appId=" + appId + "&commodityId=" + goodsId + "&adId=" + adid + "&cpsid=" + code + "&SrcType=28" + "&SrcTagId=" + adid; window.location.href = url; } //获取URL某值 function getQueryString(name) { var r; if (arguments.length > 1) { r = arguments[1].split(‘?‘)[1]; } else { r = window.location.search.substr(1); } // var r = str ? str.split(‘?‘)[1] : ‘‘ || window.location.search.substr(1); var reg = new RegExp("(^|&)" + name + "=([^&]*)(&|$)", "i"); r = r.match(reg); if (r != null) return unescape(r[2]); return null; }</script>
瀑布流 结合 懒加载 操作实例
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