Framework7中的预加载器由可缩放矢量图形(SVG)制成,并使用CSS进行动画处理,这使其易于调整大小.预加载器有两种颜色和减号;
默认为浅色背景
另一种是深色背景
您可以在HTML中使用 preloader 类,如下所示 :
以下示例演示了在Framework7中使用预加载器 : 号;
<!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>Panel Events</title> <link rel = "stylesheet" href = "https://img01.yuandaxia.cn/Content/img/tutorials/framework7/framework7.ios.min.css" /> <link rel = "stylesheet" href = "https://img01.yuandaxia.cn/Content/img/tutorials/framework7/framework7.ios.colors.min.css" /> </head> <body> <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">Framework7 Preloader</div> <div class = "right"> </div> </div> </div> <div class = "page-content"> <div class = "content-block row"> <div class = "col-25"><span class = "preloader"></span><br>Default Preloader</div> <div class = "col-25 col-dark"><span class = "preloader preloader-white"></span><br>White Preloader</div> <div class = "col-25"><span style = "width:42px; height:42px" class = "preloader"></span><br>Big Preloader</div> <div class = "col-25 col-dark"><span style = "width:42px; height:42px" class = "preloader preloader-white"></span><br>White Preloader</div> </div> </div> </div> </div> </div> </div> <style>.col-25{padding:5px;text-align:center;}.col-dark{background:#222;}</style> <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(); </script> </body> </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 preloader.html 文件.
将此HTML文件打开为http://localhost/preloader.html,输出显示如下.
此代码显示预加载器指示器,该指示器由SVG制作并使用CSS进行动画制作.