• 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;
                 100%;
                min- 320px;
                background: #000;
                text-align: center;
                color: #fff;
                font-size: 1.2rem;
                line-height: 40px;
            }
            footer {
                height: 52px;
                 100%;
                min- 320px;
                background: #000;
                text-align: center;
                color: #fff;
                font-size: 1.2rem;
                line-height: 52px;
                position: absolute;
                bottom: 0;
            }
            #wrapper {
                 100%;
                min- 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...

    .

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  • 原文地址:https://www.cnblogs.com/fightjianxian/p/12119075.html
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