Shulou(Shulou.com)06/03 Report--

This article introduces how to make circular progress bar in CSS3. The content is very detailed. Interested friends can refer to it for reference. I hope it can help you.

First of all, when someone says you can make a circular progress bar effect, if it is a static complete circular progress bar, then it is very simple:

CSS Code Copy content to clipboard

.circleprogress{ width: 160px; height: 160px; border:20px solid red; border-radius: 50%; }

And then you say, it's easy. But what if it's not perfectly circular? After some thought, he said,

CSS Code Copy content to clipboard

.circleprogress{ width: 160px; height: 160px; border:20px solid red; border-left:20px solid transparent; border-bottom:20px solid transparent; border-radius: 50%; }

And then he would still say, this is not difficult. But what if it's not all multiples of 45 degrees?

OK, let's set up a 200 x 200 square, and then we'll finish our effect here:

CSS Code Copy content to clipboard

.circleProgress_wrapper{ width: 200px; height: 200px; margin: 50px auto; position: relative; border:1px solid #ddd; }

Next I'm going to put two more rectangles in this container, half each:

XML/HTML Code Copy content to clipboard

CSS Code Copy content to clipboard

.wrapper{ width: 100px; height: 200px; position: absolute; top:0; overflow: hidden; } .rightright{ rightright:0; } .left{ left:0; }

这里重点说一下.wrapper 的overflow:hidden; 起着关键性作用。这两个矩形都设置了溢出隐藏，那么当我们去旋转矩形里面的圆形的时候，溢出部分就被隐藏掉了，这样我们就可以达到我们想要的效果。

从html结构也已看到，在左右矩形里面还会各自有一个圆形，先讲一下右半圆：

CSS Code复制内容到剪贴板

.circleProgress{ width: 160px; height: 160px; border:20px solid transparent; border-radius: 50%; position: absolute; top:0; } .rightcircle{ border-top:20px solid green; border-right:20px solid green; rightright:0; }

可以看到，效果已经出来了，其实本来是一个半圆弧，但由于我们设置了上边框和右边框，所以上边框有一半溢出而被隐藏了，所以我们可以通过旋转得以还原：

CSS Code复制内容到剪贴板

.circleProgress{ width: 160px; height: 160px; border:20px solid transparent; border-radius: 50%; position: absolute; top:0; -webkit-transform: rotate(45deg); }

所以只要旋转自己想要的角度就可以实现任意比例的进度条。接下来把左半圆弧也实现，变成一个全圆：

CSS Code复制内容到剪贴板

.

leftcircle{ border-bottom:20px solid green; border-left:20px solid green; left:0; }

紧接着，就是让它动起来，原理是这样的， 先让右半圆弧旋转180度，再让左半圆弧旋转180度 ，这样，两个半圆弧由于先后都全部溢出而消失了，所以看起来就是进度条再滚动的效果：

CSS Code复制内容到剪贴板

.rightcircle{ border-top:20px solid green; border-right:20px solid green; rightright:0; -webkit-animation: circleProgressLoad_right 5s linear infinite; } .leftcircle{ border-bottom:20px solid green; border-left:20px solid green; left:0; -webkit-animation: circleProgressLoad_left 5s linear infinite; } @-webkit-keyframes circleProgressLoad_right{ 0%{ -webkit-transform: rotate(45deg); } 50%,100%{ -webkit-transform: rotate(225deg); } } @-webkit-keyframes circleProgressLoad_left{ 0%,50%{ -webkit-transform: rotate(45deg); } 100%{ -webkit-transform: rotate(225deg); } }

当然，我们只需要调整一下角度就可以实现反向的效果：

CSS Code复制内容到剪贴板

.circleProgress{ width: 160px; height: 160px; border:20px solid transparent; border-radius: 50%; position: absolute; top:0; -webkit-transform: rotate(-135deg); } @-webkit-keyframes circleProgressLoad_right{ 0%{ -webkit-transform: rotate(-135deg); } 50%,100%{ -webkit-transform: rotate(45deg); } } @-webkit-keyframes circleProgressLoad_left{ 0%,50%{ -webkit-transform: rotate(-135deg); } 100%{ -webkit-transform: rotate(45deg); } }

好的，接下来就是奔向最终效果了，正如我们一开始看到的那样，有点像我们使用360卫士清理垃圾时的类似效果，当然不是很像啦：

CSS Code复制内容到剪贴板

.circleProgress_wrapper{ width: 200px; height: 200px; margin: 50px auto; position: relative; border:1px solid #ddd; } .wrapper{ width: 100px; height: 200px; position: absolute; top:0; overflow: hidden; } .rightright{ rightright:0; } .left{ left:0; } .circleProgress{ width: 160px; height: 160px; border:20px solid rgb(232, 232, 12); border-radius: 50%; position: absolute; top:0; -webkit-transform: rotate(45deg); } .rightcircle{ border-top:20px solid green; border-right:20px solid green; rightright:0; -webkit-animation: circleProgressLoad_right 5s linear infinite; } .leftcircle{ border-bottom:20px solid green; border-left:20px solid green; left:0; -webkit-animation: circleProgressLoad_left 5s linear infinite; } @-webkit-keyframes circleProgressLoad_right{ 0%{ border-top:20px solid #ED1A1A; border-right:20px solid #ED1A1A; -webkit-transform: rotate(45deg); } 50%{ border-top:20px solid rgb(232, 232, 12); border-right:20px solid rgb(232, 232, 12); border-left:20px solid rgb(81, 197, 81); border-bottom:20px solid rgb(81, 197, 81); -webkit-transform: rotate(225deg); } 100%{ border-left:20px solid green; border-bottom:20px solid green; -webkit-transform: rotate(225deg); } } @-webkit-keyframes circleProgressLoad_left{ 0%{ border-bottom:20px solid #ED1A1A; border-left:20px solid #ED1A1A; -webkit-transform: rotate(45deg); } 50%{ border-bottom:20px solid rgb(232, 232, 12); border-left:20px solid rgb(232, 232, 12); border-top:20px solid rgb(81, 197, 81); border-right:20px solid rgb(81, 197, 81); -webkit-transform: rotate(45deg); } 100%{ border-top:20px solid green; border-right:20px solid green; border-bottom:20px solid green; border-left:20px solid green; -webkit-transform: rotate(225deg); } }

可以看到，其实就是多了一些改变不同边框颜色的动画而已，这个就给大家自己去实践吧! 主要还是利用两个矩形来完成这么一个圆形进度条效果，特别注意overflow这条规则，起着关键作用。

关于CSS3怎么制作圆环形进度条就分享到这里了，希望以上内容可以对大家有一定的帮助，可以学到更多知识。如果觉得文章不错，可以把它分享出去让更多的人看到。

Welcome to subscribe "Shulou Technology Information " to get latest news, interesting things and hot topics in the IT industry, and controls the hottest and latest Internet news, technology news and IT industry trends.