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這篇“jQuery+CSS怎樣實現(xiàn)前端網(wǎng)頁加載進度條的三種方式”文章,文中示例代碼介紹的非常詳細,具有一定的參考價值,感興趣的小伙伴們一定要參考一下,對于“jQuery+CSS怎樣實現(xiàn)前端網(wǎng)頁加載進度條的三種方式”,小編整理了以下知識點,請大家跟著小編的步伐一步一步的慢慢理解,接下來就讓我們進入主題吧。
css是一種用來表現(xiàn)HTML或XML等文件樣式的計算機語言,主要是用來設計網(wǎng)頁的樣式,使網(wǎng)頁更加美化。它也是一種定義樣式結構如字體、顏色、位置等的語言,并且css樣式可以直接存儲于HTML網(wǎng)頁或者單獨的樣式單文件中,而樣式規(guī)則的優(yōu)先級由css根據(jù)這個層次結構決定,從而實現(xiàn)級聯(lián)效果,發(fā)展至今,css不僅能裝飾網(wǎng)頁,也可以配合各種腳本對于網(wǎng)頁進行格式化。
前端網(wǎng)頁加載進度條的實現(xiàn)有三種方式,看自己需求:
一、頂部進度條
在html代碼中間插入jq代碼 執(zhí)行動畫。頁面加載到哪部分,進度條就會相應的向前走多少
當全部加載完成后將loading進度條模塊隱藏
<!DOCTYPE html> <html> <head> <meta charset="UTF-8"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <meta http-equiv="X-UA-Compatible" content="ie=edge"> <script src="jquery.min.js"></script> <title>頂部進度條</title> <style> .loading {position: fixed;top: 0;left: 0; width: 100%; height: 100%; background-color: #fff;} .pic {width: 0;height: 10px;background-color: #c33;border-radius: 5px;} </style> </head> <body> <div> <div></div> </div> <header> <img src="http://file02.16sucai.com/d/file/2015/0128/8b0f093a8edea9f7e7458406f19098af.jpg" alt=""> <img src="http://img12.3lian.com/gaoqing02/02/93/37.jpg" alt=""> </header> <script> $(".loading .pic").animate({width: "20%"},100); </script> <section> <img src="http://g.hiphotos.baidu.com/zhidao/pic/item/c83d70cf3bc79f3d6e7bf85db8a1cd11738b29c0.jpg" alt=""> <img src="http://big5.wallcoo.com/photograph/summer_feeling/images/%5Bwallcoo.com%5D_summer_feeling_234217.jpg" alt=""> </section> <script> $(".loading .pic").animate({width: "40%"},100); </script> <section> <img src="http://cdn.duitang.com/uploads/item/201409/08/20140908130732_kVXzh.jpeg" alt=""> <img src="http://file02.16sucai.com/d/file/2014/1006/e94e4f70870be76a018dff428306c5a3.jpg" alt=""> </section> <script> $(".loading .pic").animate({width: "60%"},100); </script> <section> <img src="http://b-ssl.duitang.com/uploads/item/201703/01/20170301163305_sCd8j.gif" alt=""> </section> <script> $(".loading .pic").animate({width: "80%"},100); </script> <footer> <img src="http://img.51ztzj.com/upload/image/20130417/201304172007_670x419.jpg" alt=""> <img src="http://img0.imgtn.bdimg.com/it/u=1618007397,4183425847&fm=26&gp=0.jpg" alt=""> </footer> <script> $(".loading .pic").animate({width: "100%"},100, function() { $(".loading").fadeOut(); }); </script> </body> </html>
二、直接在頁面插入關于加載的動態(tài)圖,頁面加載完再隱藏掉
關于圖片可以在這個網(wǎng)站找:https://loading.io/ 可以根據(jù)自己的需求調樣式
當然,如果想自己寫也可以,下面是博主自己用css3寫的一個小動畫
代碼如下
<!DOCTYPE html> <html> <head> <meta charset="UTF-8"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <meta http-equiv="X-UA-Compatible" content="ie=edge"> <title>css3動畫進度條</title> <style> .loading {position: fixed;top:0;left:0;width: 100%; height: 100%;background-color: #fff;} .pic {position: absolute;top: 0;bottom: 0;left: 0;right: 0;margin: auto;width: 100px;height:40px;} .pic i {float:left;margin: 0 2px;width: 6px;height: 30px;background-color: indigo;transform: scaleY(0.4);animation: load 1.2s infinite;} .pic i:nth-child(2){-webkit-animation-delay: 0.1s;animation-delay: 0.1s;} .pic i:nth-child(3){-webkit-animation-delay: 0.2s;animation-delay: 0.2s;} .pic i:nth-child(4){-webkit-animation-delay: 0.3s;animation-delay: 0.3s;} .pic i:nth-child(5){-webkit-animation-delay: 0.4s;animation-delay: 0.4s;} .pic i:nth-child(6){-webkit-animation-delay: 0.5s;animation-delay: 0.5s;} @-webkit-keyframes load { 0%,40%,100%{-webkit-transform: scaleY(0.4); transform: scaleY(0.4)} 20%{-webkit-transform: scaleY(1); transform: scaleY(1)} } @keyframes load { 0%,40%,100%{-webkit-transform: scaleY(0.4); transform: scaleY(0.4)} 20%{-webkit-transform: scaleY(1); transform: scaleY(1)} } </style> <script src="jquery.min.js"></script> <script> document.onreadystatechange = function() { // 頁面狀態(tài)發(fā)生改變時觸發(fā) if(document.readyState == "complete") { // 頁面加載完成時隱藏 $(".loading").fadeOut(); } } </script> </head> <body> <div> <div> <i></i> <i></i> <i></i> <i></i> <i></i> <i></i> </div> </div> <img src="http://file02.16sucai.com/d/file/2015/0128/8b0f093a8edea9f7e7458406f19098af.jpg" alt=""> <img src="http://img12.3lian.com/gaoqing02/02/93/37.jpg" alt=""> <img src="http://g.hiphotos.baidu.com/zhidao/pic/item/c83d70cf3bc79f3d6e7bf85db8a1cd11738b29c0.jpg" alt=""> <img src="http://big5.wallcoo.com/photograph/summer_feeling/images/%5Bwallcoo.com%5D_summer_feeling_234217.jpg" alt=""> <img src="http://cdn.duitang.com/uploads/item/201409/08/20140908130732_kVXzh.jpeg" alt=""> <img src="http://file02.16sucai.com/d/file/2014/1006/e94e4f70870be76a018dff428306c5a3.jpg" alt=""> <img src="http://b-ssl.duitang.com/uploads/item/201703/01/20170301163305_sCd8j.gif" alt=""> <img src="http://img.51ztzj.com/upload/image/20130417/201304172007_670x419.jpg" alt=""> <img src="http://img0.imgtn.bdimg.com/it/u=1618007397,4183425847&fm=26&gp=0.jpg" alt=""> </body> </html>
三、實時獲取數(shù)據(jù)的進度條(百分比)
代碼如下
<!DOCTYPE html> <html> <head> <meta charset="UTF-8"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <meta http-equiv="X-UA-Compatible" content="ie=edge"> <title>百分比進度條</title> <style> .loading {position: fixed;top:0;left:0;width: 100%; height: 100%;background-color: #fff;} .pic {position: absolute;top: 0;bottom: 0;left: 0;right: 0;margin: auto;width: 100px;height:100px;line-height: 55px;text-align: center;font-size: 22px;} .pic span {display: inline-block;position: absolute;top: 10px;left: 10px;width: 80px;height: 80px;border-radius: 50%;box-shadow: 0 3px 0 #999; -webkit-animation: move 1s infinite linear;animation: move 1s infinite linear;} @-webkit-keyframes move { 0%{-webkit-transform: rotate(0deg);transform: rotate(0deg);} 100%{-webkit-transform: rotate(360deg);transform: rotate(360deg);} } @keyframes move { 0%{-webkit-transform: rotate(0deg);transform: rotate(0deg);} 100%{-webkit-transform: rotate(360deg);transform: rotate(360deg);} } </style> <script src="jquery.min.js"></script> <script> $(function() { var img = $("img"); // 獲取所有的img元素 var num = 0; // 用來存儲已加載的圖片個數(shù) img.each(function(i) { // 遍歷所有圖片 var oImg = new Image(); oImg.onload = function() { // onload 圖片加載完成后執(zhí)行 num++; $(".pic p").html(parseInt(num / img.length * 100) + '%'); if(num >= img.length) { $(".loading").fadeOut(); // 頁面加載完成后隱藏 } } oImg.src = img[i].src; }) }) </script> </head> <body> <div> <div> <span></span> <p>0%</p> </div> </div> <img src="http://file02.16sucai.com/d/file/2015/0128/8b0f093a8edea9f7e7458406f19098af.jpg" alt=""> <img src="http://img12.3lian.com/gaoqing02/02/93/37.jpg" alt=""> <img src="http://g.hiphotos.baidu.com/zhidao/pic/item/c83d70cf3bc79f3d6e7bf85db8a1cd11738b29c0.jpg" alt=""> <img src="http://big5.wallcoo.com/photograph/summer_feeling/images/%5Bwallcoo.com%5D_summer_feeling_234217.jpg" alt=""> <img src="http://cdn.duitang.com/uploads/item/201409/08/20140908130732_kVXzh.jpeg" alt=""> <img src="http://file02.16sucai.com/d/file/2014/1006/e94e4f70870be76a018dff428306c5a3.jpg" alt=""> <img src="http://b-ssl.duitang.com/uploads/item/201703/01/20170301163305_sCd8j.gif" alt=""> <img src="http://img.51ztzj.com/upload/image/20130417/201304172007_670x419.jpg" alt=""> <img src="http://img0.imgtn.bdimg.com/it/u=1618007397,4183425847&fm=26&gp=0.jpg" alt=""> </body> </html>
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