web前端动态添加进度条

来源：互联网发布：淘宝查号网址编辑：程序博客网时间：2024/05/20 15:37

为了网络延迟加载或者为了防止提交后重复点击提交按钮，比较好的方式就是显示一个比较优雅的进度条

源码如下：

<!DOCTYPE html><html lang="en"><head>    <meta charset="UTF-8">    <title>进度条</title>    <style>        *{            padding: 0;            margin: 0;        }        .loading{            width: 100%;            height: 100%;            background: #ffffff;            opacity: 0.5;            left: 0;            top:0;            position: fixed;            z-index: 100;        }        .loading .pic{            width: 100px;            height: 100px;            position: absolute;            left: 0;            top:0;            bottom: 0;            right: 0;            margin: auto;            text-align: center;            font-size: 20px;            line-height: 100px;        }    </style>    <script src="js/jquery.js"></script>    <script>          document.onreadystatechange=function () {              if ("interactive"==document.readyState){                  var ahtml="<div class='loading'> <div class='pic'> <img src='images/loading.svg' width='80px' height='80px' ><br/><b >"+jjj+"</b></div></div>" ;                  $("body").append(ahtml);              }else              if ("complete"==document.readyState){                 $(".loading").fadeOut(100);              }          };    </script></head><body>     <div>         <img src="images/loading_1.png">         <img src="images/loading_2.png">         <img src="images/loading_3.png">     </div></body></html>

可以自己调整css样式实现多种多样的进度条样式

可以将上面的js代码封装到common.js,可以在做网络请求的时候做相应的显隐操作

/** * 显示进度条 * @param msg 进度条下面显示的内容 */function showLoading(msg) {    var ahtml="<div class='loading'> <div class='pic'> <img src='image/loading.svg' width='80px' height='80px' ><br>"+msg+"</div></div>" ;    $("body").append(ahtml);}/** * 隐藏进度条 */function hiddleLoading() {    $(".loading").fadeOut(100);}

loading.svg文件如下（css）：

<svg class="lds-spinner" width="200px"  height="200px"  xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" viewBox="0 0 100 100" preserveAspectRatio="xMidYMid" style="background: none;"><g transform="rotate(0 50 50)">  <rect x="47" y="24" rx="9.4" ry="4.8" width="6" height="12" fill="#000000">    <animate attributeName="opacity" values="1;0" times="0;1" dur="1s" begin="-0.9166666666666666s" repeatCount="indefinite"></animate>  </rect></g><g transform="rotate(30 50 50)">  <rect x="47" y="24" rx="9.4" ry="4.8" width="6" height="12" fill="#000000">    <animate attributeName="opacity" values="1;0" times="0;1" dur="1s" begin="-0.8333333333333334s" repeatCount="indefinite"></animate>  </rect></g><g transform="rotate(60 50 50)">  <rect x="47" y="24" rx="9.4" ry="4.8" width="6" height="12" fill="#000000">    <animate attributeName="opacity" values="1;0" times="0;1" dur="1s" begin="-0.75s" repeatCount="indefinite"></animate>  </rect></g><g transform="rotate(90 50 50)">  <rect x="47" y="24" rx="9.4" ry="4.8" width="6" height="12" fill="#000000">    <animate attributeName="opacity" values="1;0" times="0;1" dur="1s" begin="-0.6666666666666666s" repeatCount="indefinite"></animate>  </rect></g><g transform="rotate(120 50 50)">  <rect x="47" y="24" rx="9.4" ry="4.8" width="6" height="12" fill="#000000">    <animate attributeName="opacity" values="1;0" times="0;1" dur="1s" begin="-0.5833333333333334s" repeatCount="indefinite"></animate>  </rect></g><g transform="rotate(150 50 50)">  <rect x="47" y="24" rx="9.4" ry="4.8" width="6" height="12" fill="#000000">    <animate attributeName="opacity" values="1;0" times="0;1" dur="1s" begin="-0.5s" repeatCount="indefinite"></animate>  </rect></g><g transform="rotate(180 50 50)">  <rect x="47" y="24" rx="9.4" ry="4.8" width="6" height="12" fill="#000000">    <animate attributeName="opacity" values="1;0" times="0;1" dur="1s" begin="-0.4166666666666667s" repeatCount="indefinite"></animate>  </rect></g><g transform="rotate(210 50 50)">  <rect x="47" y="24" rx="9.4" ry="4.8" width="6" height="12" fill="#000000">    <animate attributeName="opacity" values="1;0" times="0;1" dur="1s" begin="-0.3333333333333333s" repeatCount="indefinite"></animate>  </rect></g><g transform="rotate(240 50 50)">  <rect x="47" y="24" rx="9.4" ry="4.8" width="6" height="12" fill="#000000">    <animate attributeName="opacity" values="1;0" times="0;1" dur="1s" begin="-0.25s" repeatCount="indefinite"></animate>  </rect></g><g transform="rotate(270 50 50)">  <rect x="47" y="24" rx="9.4" ry="4.8" width="6" height="12" fill="#000000">    <animate attributeName="opacity" values="1;0" times="0;1" dur="1s" begin="-0.16666666666666666s" repeatCount="indefinite"></animate>  </rect></g><g transform="rotate(300 50 50)">  <rect x="47" y="24" rx="9.4" ry="4.8" width="6" height="12" fill="#000000">    <animate attributeName="opacity" values="1;0" times="0;1" dur="1s" begin="-0.08333333333333333s" repeatCount="indefinite"></animate>  </rect></g><g transform="rotate(330 50 50)">  <rect x="47" y="24" rx="9.4" ry="4.8" width="6" height="12" fill="#000000">    <animate attributeName="opacity" values="1;0" times="0;1" dur="1s" begin="0s" repeatCount="indefinite"></animate>  </rect></g></svg>

推荐一个找进度条资源的网站：https://preloaders.net/

阅读全文

0 0