H5在微信公众号的下拉刷新实现

红太狼 2022-07-15 08:56 108阅读 0赞

转载自：[http://blog.csdn.net/zl544434558/article/details/50401832][http_blog.csdn.net_zl544434558_article_details_50401832]

由于项目需要在微信公众号做“健康资讯”相关的，所以会用到下拉刷新，可是使用的原生H5做页面，不过希望能够做到和app原生一样的下拉刷新效果，然后在网上找了找H5下拉刷新相关的资料，具体有：Iscroll，MUI,Hook.js,dragloader 等，它们宣称都可以很好的解决下拉刷新的问题，但是我查看的具体的官网文档和例子后，我还是选择了Iscroll作为本次的下拉刷新实现，因为其它的技术要么文档写的不好，要么例子实现太少，而iscroll的例子却很多。  
下面是我从项目里面把下拉刷新的模块扒出来的，把实现的效果分享一下 。  
具体实现代码思路是：页面的列表展示通过后台返回的json数组，然后遍历json数组通过js添加列表。每次向下刷新后类似点击分页“下一页”，具体代码如下：

<!DOCTYPE html>
    <html>
    <head>
    <meta http-equiv="Content-Type" content="text/html; charset=utf-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0, user-scalable=0, minimum-scale=1.0, maximum-scale=1.0">
    <meta name="apple-mobile-web-app-capable" content="yes">
    <meta name="apple-mobile-web-app-status-bar-style" content="black">
    <title>健康资讯</title>
    <script src="jquery.min.js"/></script>
    <script type="text/javascript" src="iscroll.js"></script>
    <link rel="stylesheet" type="text/css" href="bookBase.css" />
    
    
    <style> html, body{ background-color: #fff;} .m-img-font-box{ } .m-img-font-box a.link{ display: block; border-bottom: 1px solid #ccc;} .m-img-font-box a.link dl{ padding: 5px 10px; height: 50px; overflow: hidden;} .m-img-font-box a.link dl dt{ width: 60px; height: 60px; float: left;} .m-img-font-box a.link dl dt img{ width: 100%; height: 82%;} .m-img-font-box a.link dl dd{ margin-left: 65px; padding-top: 1px;} .m-img-font-box a.link dl dd p{ font-size: 16px; color: #bbb;} .m-img-font-box a.link dl dd p.title{ font-size: 16px; color: #464646; width: 91%; overflow: hidden; text-overflow:ellipsis; white-space:nowrap;} .m-img-font-box a.link dl dd p.font{ width: 98%; overflow: hidden; text-overflow:ellipsis; white-space:nowrap; font-size: 14px;} h3{ font-size: 13px; font-weight: normal; padding: 5px 10px;} #wrapper { position:absolute; z-index:1; top:30px; bottom:0; left:-9999px; width:100%; background:#FFF; overflow:auto; } #scroller { position:absolute; z-index:1; -webkit-tap-highlight-color:rgba(0,0,0,0); width:100%; padding:0; } #pullUp { background:#fff; height:40px; line-height:40px; padding:5px 10px; border-bottom:1px solid #ccc; font-weight:bold; font-size:14px; color:#888; } #pullUp.loading .pullUpLabel { background:url(../images/loading/loading.gif) no-repeat center 0; width: 100%; height: 30px; align:center; background-size: auto 100%; } </style>
    
    
    <script type="text/javascript"> var myScroll, pullUpEl, pullUpOffset, generatedCount = 0; var currenPage = 0; var pageSize = 3; function pullUpAction () { currenPage ++; var elInit = $("#thelist"); var param = { "currentPage":currenPage,"pageSize":pageSize}; $.ajax({ url:"result.json", //后台处理程序 type:'post', //数据发送方式 dataType: 'json', data:param, async: true, success:function(data){ var result = "" ; $(data).each(function(){ var checker = $(this)[0]; result += "<div class='mfb'><a class='link' href='"+checker.url+"'>"+ "<dl><dt><img src='"+checker.icon+"'/> </dt>"+ "<dd><p class='title'>"+checker.title+"</p>"+ "<p class='title'>"+checker.subTitle+"</p>"+ "</dd></dl></a></div>"; }); elInit.append(result); myScroll.refresh(); } }); } function loaded() { pullUpEl = document.getElementById('pullUp'); if(pullUpEl != null){ pullUpOffset = pullUpEl.offsetHeight; }else{ pullUpOffset = 0; } myScroll = new iScroll('wrapper', { useTransition: true, onRefresh: function () { if (pullUpEl.className.match('loading')) { pullUpEl.className = ''; $(pullUpEl).css("display", "none"); pullUpEl.querySelector('.pullUpLabel').innerHTML = 'Pull up to load more...'; } }, onScrollMove: function () { if (this.y < (this.maxScrollY - 5) && !pullUpEl.className.match('flip')) { pullUpEl.className = 'flip'; $(pullUpEl).css("display",""); pullUpEl.querySelector('.pullUpLabel').innerHTML = '松开载入更多..'; this.maxScrollY = this.maxScrollY; } else if (this.y > (this.maxScrollY + 5) && pullUpEl.className.match('flip')) { pullUpEl.className = ''; pullUpEl.querySelector('.pullUpLabel').innerHTML = 'Pull up to load more...'; this.maxScrollY = pullUpOffset; } }, onScrollEnd: function () { if (pullUpEl.className.match('flip')) { pullUpEl.className = 'loading'; $(pullUpEl).css("display",""); pullUpEl.querySelector('.pullUpLabel').innerHTML = ''; pullUpAction(); // Execute custom function (ajax call?) } } }); document.getElementById('wrapper').style.left = '0'; } document.addEventListener('touchmove', function (e) { e.preventDefault(); }, false); document.addEventListener('DOMContentLoaded', function () { setTimeout(loaded, 200); }, false); //页面加载完成后，向后台请求数据 $(function(){ pullUpAction(); }); </script>
    
    
    
    </style>
    </head>
    <body>
        <h3>资讯列表</h3>
        <div class="cm-container-box" id="wrapper">
            <div class="cm-table" id="scroller">
                <div class="m-img-font-box" id="thelist">
    
                </div>
    
                    <div id="pullUp" style="display:none; text-align: center;">
                        <span class="pullUpLabel"></span>
                    </div>
    
                </div>
        </div>
    
    
    </body>
    </html>

完整demo下载地址：[http://download.csdn.net/download/zl544434558/9376562][http_download.csdn.net_download_zl544434558_9376562]

[http_blog.csdn.net_zl544434558_article_details_50401832]: http://blog.csdn.net/zl544434558/article/details/50401832
[http_download.csdn.net_download_zl544434558_9376562]: http://download.csdn.net/download/zl544434558/9376562