jquery+ajax实现下拉刷新+上拉加载

图片描述

上面动图是实现的效果。

全程无需重新加载整个页面，只需要上下拉即可刷新数据！

index.html

<!DOCTYPE html>
<html lang="en"> <head> <meta charset="UTF-8"> <title>上拉加载</title> <meta name="viewport" content="width=device-width,initial-scale=1.0,minimum-scale=1.0,maximum-scale=1.0,user-scalable=no"/> <script src="http://www.jq22.com/jquery/jquery-1.10.2.js"></script> <style type="text/css"> * { margin: 0; padding: 0; list-style: none; box-sizing: border-box; -webkit-box-sizing: border-box; -moz-box-sizing: border-box; } html {font-size: 14px; } header { height: 40px; width: 100%; min-width: 320px; background: #000; text-align: center; color: #fff; font-size: 1.2rem; line-height: 40px; } footer { height: 52px; width: 100%; min-width: 320px; background: #000; text-align: center; color: #fff; font-size: 1.2rem; line-height: 52px; position: absolute; bottom: 0; } #wrapper { width: 100%; min-width: 320px; position: absolute; left: 0; top: 40px; bottom: 52px; overflow: hidden; z-index: 1; background-color: #eee; /* 防止本机Windows上的触摸事件 */ -ms-touch-action: none; /* 防止callout tap-hold和文本的选择 */ -webkit-touch-callout: none; -webkit-user-select: none; -moz-user-select: none; -ms-user-select: none; user-select: none; /* 防止文本调整取向变化对web应用程序很有用 */ -webkit-text-size-adjust: none; -moz-text-size-adjust: none; -ms-text-size-adjust: none; -o-text-size-adjust: none; text-size-adjust: none; } .pull-loading { text-align: center; height: 40px; line-height: 40px; display: flex; align-items: center; justify-content: center; } #scroller ul li { padding: 20px 10px; border-bottom: solid 1px #ccc; background: #fff; } </style> </head> <body> <header>上拉加载，下拉刷新</header> <div id="wrapper"> <div id="scroller"> <ul> <li>这里显示部分数据</li> <li>这里显示部分数据</li> <li>这里显示部分数据</li> <li>这里显示部分数据</li> <li>这里显示部分数据</li> </ul> <div class="pull-loading"> 上拉加载 </div> </div> </div> <footer>底部</footer> <script type="text/javascript" src="js/iscroll.js"></script> <script type="text/javascript"> var myscroll = new iScroll("wrapper", { onScrollMove: function () { //拉动时 //上拉加载 if (this.y < this.maxScrollY) { $(".pull-loading").html("释放加载"); $(".pull-loading").addClass("loading"); } else { $(".pull-loading").html("上拉加载"); $(".pull-loading").removeClass("loading"); } }, onScrollEnd: function () { //拉动结束时 //上拉加载 if ($(".pull-loading").hasClass('loading')) { $(".pull-loading").html("加载中..."); pullOnLoad(); } } }); //上拉加载函数,ajax var num = 0; var page = 4; //每次加载4条 function pullOnLoad() { setTimeout(function () { $.ajax({ url: "json/data.json", type: "get", dataType: 'json', success: function (data) { var data_length = data.length;//数据的总长度 var remainder = data_length % page;//余数 if ( data_length >= (num+page)){ for (var j = num; j < num + page; j++){ var text = data[j].text; $("#scroller ul").append("<li>"+ text +"</li>"); } num+=page; }else if (remainder != 0 && data_length-num == remainder){ for (var j = num; j < num + remainder; j++){ var text = data[j].text; $("#scroller ul").append("<li>"+ text +"</li>"); } num+=page; }else{ $('.pull-loading').html("没有了哟"); } myscroll.refresh(); }, error: function () { console.log("出错了"); } }); myscroll.refresh(); }, 500); } </script> </body> </html>

data.json

[
  {
    "text":"十年编程两茫茫，工期短，需求长。",
    "date":"2018-02-02 14:00"
  },
  {
    "text":"千行代码，Bug何处藏。", "date":"2018-02-02 14:00" }, { "text":"纵使上线又如何，新版本，继续忙。", "date":"2018-02-02 14:00" }, { "text":"黑白颠倒没商量，睡地铺，吃食堂。", "date":"2018-02-02 14:00" }, { "text":"夜半梦醒，无人在身旁。", "date":"2018-02-02 14:00" }, { "text":"最怕灯火阑珊时，手机响，心里慌。", "date":"2018-02-02 14:00" }, { "text":"是，程序员设计了程序", "date":"2018-02-02 14:00" }, { "text":"还是，程序造就了程序员？", "date":"2018-02-02 14:00" }, { "text":"程序，程序员——你的名字，我的姓氏", "date":"2018-02-02 14:00" }, { "text":"日撸代码三千行，疯狂、疯狂，人未老，珠已黄。", "date":"2018-02-02 14:00" }, { "text":"少年投身IT行，老来无伴又何妨。擦肩美女不屑看，三千码友在身旁。", "date":"2018-02-02 14:00" }, { "text":"老夫聊发少年狂，不小心，选错行。误入IT，两眼泪茫茫", "date":"2018-02-02 14:00" }, { "text":"夜半话凄凉，转眼泪千行，日日工期紧，亦为重构忙。久易无定论，命悬需求方，四顾前途路，一步三踉跄。", "date":"2018-02-02 14:00" }, { "text":"IT放两旁，闲来把码敲，余音仍绕梁。码农压力大，愿君更健康！", "date":"2018-02-02 14:00" }, { "text":"111111111111", "date":"2018-02-02 14:00" }, { "text":"22222", "date":"2018-02-02 14:00" }, { "text":"33333", "date":"2018-02-02 14:00" }, { "text":"4444", "date":"2018-02-02 14:00" }, { "text":"55555", "date":"2018-02-02 14:00" }, { "text":"66666", "date":"2018-02-02 14:00" }, { "text":"7777", "date":"2018-02-02 14:00" }, { "text":"88888", "date":"2018-02-02 14:00" }, { "text":"99999", "date":"2018-02-02 14:00" }, { "text":"1010101010", "date":"2018-02-02 14:00" }, { "text":"1.1.1.1.1.1.1.1.1.1.", "date":"2018-02-02 14:00" }, { "text":"12121212121212", "date":"2018-02-02 14:00" }, { "text":"1131313133131", "date":"2018-02-02 14:00" }, { "text":"1414141414", "date":"2018-02-02 14:00" }, { "text":"1515151515151", "date":"2018-02-02 14:00" }, { "text":"111111111111", "date":"2018-02-02 14:00" }, { "text":"111111111111", "date":"2018-02-02 14:00" }, { "text":"111111111111", "date":"2018-02-02 14:00" }, { "text":"111111111111", "date":"2018-02-02 14:00" }, { "text":"111111111111", "date":"2018-02-02 14:00" }, { "text":"111111111111", "date":"2018-02-02 14:00" }, { "text":"111111111111", "date":"2018-02-02 14:00" } ]

需要引入两个js文件
jquery-2.2.4.min.js
iscroll.js

这两个文件已经准备好了

https://pan.baidu.com/s/1dGST...

jquery+ajax实现下拉刷新+上拉加载

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