这是一个特殊的组件,用于通过拉动来刷新(重新加载)页面内容.
以下代码显示如何刷新页面内容 :
<div class = "page"> <!-- Page content should have additional "pull-to-refresh-content" class --> <div class = "page-content pull-to-refresh-content" data-ptr-distance = "55"> <!-- Default pull to refresh layer--> <div class = "pull-to-refresh-layer"> <div class = "preloader"></div> <div class = "pull-to-refresh-arrow"></div> </div> <!-- usual content below --> <div class = "list-block"> ... </div> </div>
以下类用于刷新 :
页面内容 : 它有一个额外的 pull-to-refresh-content 类,它需要启用pull来刷新.
pull -to-refresh-layer : 它是一个隐藏层,用于拉动刷新视觉元素,它只是一个预加载器和一个箭头.
data-ptr-distance ="55" : 这是附加属性,允许您设置自定义"拉到刷新"触发距离,其默认值为44px.
在"拉动刷新"中有一些JavaScript事件,在下表中给出 :
S.No | 活动&说明 | 目标 |
---|---|---|
1 | pullstart 每当您开始提取内容时,它都会被触发. | 拉动刷新内容. < div class ="拉至刷新内容"> |
2 | pullmove 当您提示刷新内容时会触发. | 拉动刷新内容. < div class ="pull-to-refresh-content"> ; |
3 | pullend 每当您释放pull以刷新内容时,它都会被触发. | 拉动刷新内容. < div class ="pull-to-refresh-content" > |
4 | 刷新 当拉动刷新进入"刷新"时,将触发此事件州. | 拉动刷新内容. < div class ="pull-to-refresh-content"> |
5 | refreshdone 刷新后会触发它并返回初始状态.这将在调用 pullToRefreshDone 方法后完成. | 拉动刷新内容. < div class ="pull-to-refresh-content"> |
可以使用App的方法使用Pull to Refresh.
S.否 | App的方法&说明 |
---|---|
1 | myApp.pullToRefreshDone(ptrContent) 它用于重置 pull-to-refresh 内容. |
2 | myApp.pullToRefreshTrigger(ptrContent) 它用于触发刷新指定的拉动以刷新内容. |
3 | myApp.destroyPullToRefresh(ptrContent) 它用于销毁/禁用拉动以刷新指定的拉动以刷新内容. |
4 | myApp.initPullToRefresh(ptrContent) 它用于初始化/启用 拉动以刷新内容. |
其中 ptrContent 用于 HTMLElement 或 string 拉到刷新内容以重置/触发或禁用/启用.
以下示例演示如何使用刷新组件启动页面内容的刷新 :
<!DOCTYPE html> <html> <head> <meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=1, minimum-scale=1, user-scalable=no, minimal-ui"> <meta name="apple-mobile-web-app-capable" content="yes"> <meta name="apple-mobile-web-app-status-bar-style" content="black"> <title>Pull To Refresh</title> <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/framework7/1.4.2/css/framework7.ios.min.css"> <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/framework7/1.4.2/css/framework7.ios.colors.min.css"> </head> <div class="views"> <div class="view view-main"> <div class="pages"> <div data-page="home" class="page navbar-fixed"> <div class="navbar"> <div class="navbar-inner"> <div class="left"> </div> <div class="center">Pull To Refresh</div> <div class="right"> </div> </div> </div> <div class="page-content pull-to-refresh-content"> <div class="pull-to-refresh-layer"> <div class="preloader"></div> <div class="pull-to-refresh-arrow"></div> </div> <div class="list-block media-list"> <ul> <li class="item-content"> <div class="item-media"><img src="/framework7/images/apple.png" width="44"></div> <div class="item-inner"> <div class="item-title-row"> <div class="item-title">apple</div> </div> </div> </li> <li class="item-content"> <div class="item-media"><img src="/framework7/images/froots_img.jpg" width="44"></div> <div class="item-inner"> <div class="item-title-row"> <div class="item-title">strawberry</div> </div> </div> </li> <li class="item-content"> <div class="item-media"><img src="/framework7/images/mango.jpg" width="44"></div> <div class="item-inner"> <div class="item-title-row"> <div class="item-title">Mango</div> </div> </div> </li> </ul> <div class="list-block-label"> <p>Just pull page down to let the magic happen.</p> </div> </div> </div> </div> </div> </div> </div> <script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/framework7/1.4.2/js/framework7.min.js"></script> <script> var myApp = new Framework7(); var $$ = Dom7; // Dummy Content var fruits = ['mango', 'orange', 'watermelon', 'banana']; // Pull to refresh content var ptrContent = $$('.pull-to-refresh-content'); // Add 'refresh' listener on it ptrContent.on('refresh', function (e) { // Emulate 2s loading setTimeout(function () { var picURL = 'images/Fruit.jpg' + Math.round(Math.random() * 100); var fruit = fruits[Math.floor(Math.random() * fruits.length)]; var itemHTML = '<li class="item-content">' + '<div class="item-media"><img src="/framework7/images/Fruit.jpg" width="44"/></div>' + '<div class="item-inner">' + '<div class="item-title-row">' + '<div class="item-title">' + fruit + '</div>' + '</div>' + '</div>' + '</li>'; // Prepend new list element ptrContent.find('ul').prepend(itemHTML); // When loading done, we need to reset it myApp.pullToRefreshDone(); }, 2000); }); </script> </html>
让我们执行以下步骤,看看上面给出的代码如何工作 : 去;
将上面给出的HTML代码保存为服务器根文件夹中的 pull_to_refresh.html 文件.
将此HTML文件打开为http://localhost/pull_to_refresh.html,输出显示如下.
当用户下拉时,页面将刷新内容.