iscroll 下拉刷新功能

版本号：iscroll4.2.5.js

iscroll 版本很有关系在线： demo链接有出现白屏的bug,将iscroll版本改成iscroll4.2.5就可以了

html

<!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>iScroll demo: simple</title>

<script type="text/javascript" src="../../src/iscroll.js"></script>

<script type="text/javascript">

var myScroll,

    pullDownEl, pullDownOffset,

    pullUpEl, pullUpOffset,

    generatedCount = 0;

function pullDownAction () {

    setTimeout(function () {    // <-- Simulate network congestion, remove setTimeout from production!

        var el, li, i;

        el = document.getElementById('thelist');

        for (i=0; i<3; i++) {

            li = document.createElement('li');

            li.innerText = 'Generated row ' + (++generatedCount);

            el.insertBefore(li, el.childNodes[0]);

        }

        myScroll.refresh();        // Remember to refresh when contents are loaded (ie: on ajax completion)

    }, 1000);    // <-- Simulate network congestion, remove setTimeout from production!

}

function pullUpAction () {

    setTimeout(function () {    // <-- Simulate network congestion, remove setTimeout from production!

        var el, li, i;

        el = document.getElementById('thelist');

        for (i=0; i<3; i++) {

            li = document.createElement('li');

            li.innerText = 'Generated row ' + (++generatedCount);

            el.appendChild(li, el.childNodes[0]);

        }

        myScroll.refresh();        // Remember to refresh when contents are loaded (ie: on ajax completion)

    }, 1000);    // <-- Simulate network congestion, remove setTimeout from production!

}

function loaded() {

    pullDownEl = document.getElementById('pullDown');

    pullDownOffset = pullDownEl.offsetHeight;

    pullUpEl = document.getElementById('pullUp');

    pullUpOffset = pullUpEl.offsetHeight;

    myScroll = new iScroll('wrapper', {

        useTransition: true,

        topOffset: pullDownOffset,

        onRefresh: function () {

            if (pullDownEl.className.match('loading')) {

                pullDownEl.className = '';

                pullDownEl.querySelector('.pullDownLabel').innerHTML = 'Pull down to refresh...';

            } else if (pullUpEl.className.match('loading')) {

                pullUpEl.className = '';

                pullUpEl.querySelector('.pullUpLabel').innerHTML = 'Pull up to load more...';

            }

        },

        onScrollMove: function () {

            if (this.y > 5 && !pullDownEl.className.match('flip')) {

                pullDownEl.className = 'flip';

                pullDownEl.querySelector('.pullDownLabel').innerHTML = 'Release to refresh...';

                this.minScrollY = 0;

            } else if (this.y < 5 && pullDownEl.className.match('flip')) {

                pullDownEl.className = '';

                pullDownEl.querySelector('.pullDownLabel').innerHTML = 'Pull down to refresh...';

                this.minScrollY = -pullDownOffset;

            } else if (this.y < (this.maxScrollY - 5) && !pullUpEl.className.match('flip')) {

                pullUpEl.className = 'flip';

                pullUpEl.querySelector('.pullUpLabel').innerHTML = 'Release to refresh...';

                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 (pullDownEl.className.match('flip')) {

                pullDownEl.className = 'loading';

                pullDownEl.querySelector('.pullDownLabel').innerHTML = 'Loading...';

                pullDownAction();    // Execute custom function (ajax call?)

            } else if (pullUpEl.className.match('flip')) {

                pullUpEl.className = 'loading';

                pullUpEl.querySelector('.pullUpLabel').innerHTML = 'Loading...';

                pullUpAction();    // Execute custom function (ajax call?)

            }

        }

    });

    setTimeout(function () { document.getElementById('wrapper').style.left = '0'; }, 800);

}

document.addEventListener('touchmove', function (e) { e.preventDefault(); }, false);

document.addEventListener('DOMContentLoaded', function () { setTimeout(loaded, 200); }, false);

</script>

<style type="text/css" media="all">

body,ul,li {

    padding:0;

    margin:0;

    border:0;

}

body {

    font-size:12px;

    -webkit-user-select:none;

    -webkit-text-size-adjust:none;

    font-family:helvetica;

}

#header {

    position:absolute; z-index:2;

    top:0; left:0;

    width:100%;

    height:45px;

    line-height:45px;

    background-color:#d51875;

    background-image:-webkit-gradient(linear, 0 0, 0 100%, color-stop(0, #fe96c9), color-stop(0.05, #d51875), color-stop(1, #7b0a2e));

    background-image:-moz-linear-gradient(top, #fe96c9, #d51875 5%, #7b0a2e);

    background-image:-o-linear-gradient(top, #fe96c9, #d51875 5%, #7b0a2e);

    padding:0;

    color:#eee;

    font-size:20px;

    text-align:center;

}

#header a {

    color:#f3f3f3;

    text-decoration:none;

    font-weight:bold;

    text-shadow:0 -1px 0 rgba(0,0,0,0.5);

}

#footer {

    position:absolute; z-index:2;

    bottom:0; left:0;

    width:100%;

    height:48px;

    background-color:#222;

    background-image:-webkit-gradient(linear, 0 0, 0 100%, color-stop(0, #999), color-stop(0.02, #666), color-stop(1, #222));

    background-image:-moz-linear-gradient(top, #999, #666 2%, #222);

    background-image:-o-linear-gradient(top, #999, #666 2%, #222);

    padding:0;

    border-top:1px solid #444;

}

#wrapper {

    position:absolute; z-index:1;

    top:45px; bottom:48px; left:-9999px;

    width:100%;

    background:#aaa;

    overflow:auto;

}

#scroller {

    position:absolute; z-index:1;

/*    -webkit-touch-callout:none;*/

    -webkit-tap-highlight-color:rgba(0,0,0,0);

    width:100%;

    padding:0;

}

#scroller ul {

    list-style:none;

    padding:0;

    margin:0;

    width:100%;

    text-align:left;

}

#scroller li {

    padding:0 10px;

    height:40px;

    line-height:40px;

    border-bottom:1px solid #ccc;

    border-top:1px solid #fff;

    background-color:#fafafa;

    font-size:14px;

}

#myFrame {

    position:absolute;

    top:0; left:0;

}

/**

 *

 * Pull down styles

 *

 */

#pullDown, #pullUp {

    background:#fff;

    height:40px;

    line-height:40px;

    padding:5px 10px;

    border-bottom:1px solid #ccc;

    font-weight:bold;

    font-size:14px;

    color:#888;

}

#pullDown .pullDownIcon, #pullUp .pullUpIcon  {

    display:block; float:left;

    width:40px; height:40px;

    background:url(pull-icon@2x.png) 0 0 no-repeat;

    -webkit-background-size:40px 80px; background-size:40px 80px;

    -webkit-transition-property:-webkit-transform;

    -webkit-transition-duration:250ms;

}

#pullDown .pullDownIcon {

    -webkit-transform:rotate(0deg) translateZ(0);

}

#pullUp .pullUpIcon  {

    -webkit-transform:rotate(-180deg) translateZ(0);

}

#pullDown.flip .pullDownIcon {

    -webkit-transform:rotate(-180deg) translateZ(0);

}

#pullUp.flip .pullUpIcon {

    -webkit-transform:rotate(0deg) translateZ(0);

}

#pullDown.loading .pullDownIcon, #pullUp.loading .pullUpIcon {

    background-position:0 100%;

    -webkit-transform:rotate(0deg) translateZ(0);

    -webkit-transition-duration:0ms;

    -webkit-animation-name:loading;

    -webkit-animation-duration:2s;

    -webkit-animation-iteration-count:infinite;

    -webkit-animation-timing-function:linear;

}

@-webkit-keyframes loading {

    from { -webkit-transform:rotate(0deg) translateZ(0); }

    to { -webkit-transform:rotate(360deg) translateZ(0); }

}

</style>

</head>

<body>

<div id="header"><a href="http://cubiq.org/iscroll">iScroll</a></div>

<div id="wrapper">

    <div id="scroller">

        <div id="pullDown">

            <span class="pullDownIcon"></span><span class="pullDownLabel">Pull down to refresh...</span>

        </div>

        <ul id="thelist">

            <li>Pretty row 1</li>

            <li>Pretty row 2</li>

            <li>Pretty row 3</li>

            <li>Pretty row 4</li>

            <li>Pretty row 5</li>

            <li>Pretty row 6</li>

            <li>Pretty row 7</li>

            <li>Pretty row 8</li>

            <li>Pretty row 9</li>

            <li>Pretty row 10</li>

            <li>Pretty row 11</li>

            <li>Pretty row 12</li>

            <li>Pretty row 13</li>

            <li>Pretty row 14</li>

            <li>Pretty row 15</li>

            <li>Pretty row 16</li>

            <li>Pretty row 17</li>

            <li>Pretty row 18</li>

            <li>Pretty row 19</li>

            <li>Pretty row 20</li>

            <li>Pretty row 21</li>

            <li>Pretty row 22</li>

            <li>Pretty row 23</li>

            <li>Pretty row 24</li>

            <li>Pretty row 25</li>

            <li>Pretty row 26</li>

            <li>Pretty row 27</li>

            <li>Pretty row 28</li>

            <li>Pretty row 29</li>

            <li>Pretty row 30</li>

            <li>Pretty row 31</li>

            <li>Pretty row 32</li>

            <li>Pretty row 33</li>

            <li>Pretty row 34</li>

            <li>Pretty row 35</li>

            <li>Pretty row 36</li>

            <li>Pretty row 37</li>

            <li>Pretty row 38</li>

            <li>Pretty row 39</li>

            <li>Pretty row 40</li>

        </ul>

        <div id="pullUp">

            <span class="pullUpIcon"></span><span class="pullUpLabel">Pull up to refresh...</span>

        </div>

    </div>

</div>

<div id="footer"></div>

</body>

</html>

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