加载时圆形进度条的动画

Question

任何人可以请帮助我如何开始动画的圆形进度条边框后加载的页面，我需要动画的所有百分比...please建议我任何帮助...thanks很多关于这个问题。

请提供一个参考资料，说明如何在加载时启动动画

我需要动画类似于这个click here

​

.progress-circle {
   font-size: 20px;
   margin: 20px;
   position: relative; /* so that children can be absolutely positioned */
   padding: 0;
   width: 5em;
   height: 5em;
   background-color: #F2E9E1; 
   border-radius: 50%;
   line-height: 5em;
}

.progress-circle:after{
    border: none;
    position: absolute;
    top: 0.35em;
    left: 0.35em;
    text-align: center;
    display: block;
    border-radius: 50%;
    width: 4.3em;
    height: 4.3em;
    background-color: white;
    content: " ";
}
/* Text inside the control */
.progress-circle span {
    position: absolute;
    line-height: 5em;
    width: 5em;
    text-align: center;
    display: block;
    color: #53777A;
    z-index: 2;
}
.left-half-clipper { 
   /* a round circle */
   border-radius: 50%;
   width: 5em;
   height: 5em;
   position: absolute; /* needed for clipping */
   clip: rect(0, 5em, 5em, 2.5em); /* clips the whole left half*/ 
}
/* when p>50, don't clip left half*/
.progress-circle.over50 .left-half-clipper {
   clip: rect(auto,auto,auto,auto);
}
.value-bar {
   /*This is an overlayed square, that is made round with the border radius,
   then it is cut to display only the left half, then rotated clockwise
   to escape the outer clipping path.*/ 
   position: absolute; /*needed for clipping*/
   clip: rect(0, 2.5em, 5em, 0);
   width: 5em;
   height: 5em;
   border-radius: 50%;
   border: 0.45em solid #53777A; /*The border is 0.35 but making it larger removes visual artifacts */
   /*background-color: #4D642D;*/ /* for debug */
   box-sizing: border-box;
  
}
/* Progress bar filling the whole right half for values above 50% */
.progress-circle.over50 .first50-bar {
   /*Progress bar for the first 50%, filling the whole right half*/
   position: absolute; /*needed for clipping*/
   clip: rect(0, 5em, 5em, 2.5em);
   background-color: #53777A;
   border-radius: 50%;
   width: 5em;
   height: 5em;
}
.progress-circle:not(.over50) .first50-bar{ display: none; }


/* Progress bar rotation position */
.progress-circle.p0 .value-bar { display: none; }
.progress-circle.p1 .value-bar { transform: rotate(4deg); }
.progress-circle.p2 .value-bar { transform: rotate(7deg); }
.progress-circle.p3 .value-bar { transform: rotate(11deg); }
.progress-circle.p4 .value-bar { transform: rotate(14deg); }
.progress-circle.p5 .value-bar { transform: rotate(18deg); }
.progress-circle.p6 .value-bar { transform: rotate(22deg); }
.progress-circle.p7 .value-bar { transform: rotate(25deg); }
.progress-circle.p8 .value-bar { transform: rotate(29deg); }
.progress-circle.p9 .value-bar { transform: rotate(32deg); }
.progress-circle.p10 .value-bar { transform: rotate(36deg); }
.progress-circle.p11 .value-bar { transform: rotate(40deg); }
.progress-circle.p12 .value-bar { transform: rotate(43deg); }
.progress-circle.p13 .value-bar { transform: rotate(47deg); }
.progress-circle.p14 .value-bar { transform: rotate(50deg); }
.progress-circle.p15 .value-bar { transform: rotate(54deg); }
.progress-circle.p16 .value-bar { transform: rotate(58deg); }
.progress-circle.p17 .value-bar { transform: rotate(61deg); }
.progress-circle.p18 .value-bar { transform: rotate(65deg); }
.progress-circle.p19 .value-bar { transform: rotate(68deg); }
.progress-circle.p20 .value-bar { transform: rotate(72deg); }
.progress-circle.p21 .value-bar { transform: rotate(76deg); }
.progress-circle.p22 .value-bar { transform: rotate(79deg); }
.progress-circle.p23 .value-bar { transform: rotate(83deg); }
.progress-circle.p24 .value-bar { transform: rotate(86deg); }
.progress-circle.p25 .value-bar { transform: rotate(90deg); }
.progress-circle.p26 .value-bar { transform: rotate(94deg); }
.progress-circle.p27 .value-bar { transform: rotate(97deg); }
.progress-circle.p28 .value-bar { transform: rotate(101deg); }
.progress-circle.p29 .value-bar { transform: rotate(104deg); }
.progress-circle.p30 .value-bar { transform: rotate(108deg); }
.progress-circle.p31 .value-bar { transform: rotate(112deg); }
.progress-circle.p32 .value-bar { transform: rotate(115deg); }
.progress-circle.p33 .value-bar { transform: rotate(119deg); }
.progress-circle.p34 .value-bar { transform: rotate(122deg); }
.progress-circle.p35 .value-bar { transform: rotate(126deg); }
.progress-circle.p36 .value-bar { transform: rotate(130deg); }
.progress-circle.p37 .value-bar { transform: rotate(133deg); }
.progress-circle.p38 .value-bar { transform: rotate(137deg); }
.progress-circle.p39 .value-bar { transform: rotate(140deg); }
.progress-circle.p40 .value-bar { transform: rotate(144deg); }
.progress-circle.p41 .value-bar { transform: rotate(148deg); }
.progress-circle.p42 .value-bar { transform: rotate(151deg); }
.progress-circle.p43 .value-bar { transform: rotate(155deg); }
.progress-circle.p44 .value-bar { transform: rotate(158deg); }
.progress-circle.p45 .value-bar { transform: rotate(162deg); }
.progress-circle.p46 .value-bar { transform: rotate(166deg); }
.progress-circle.p47 .value-bar { transform: rotate(169deg); }
.progress-circle.p48 .value-bar { transform: rotate(173deg); }
.progress-circle.p49 .value-bar { transform: rotate(176deg); }
.progress-circle.p50 .value-bar { transform: rotate(180deg); }
.progress-circle.p51 .value-bar { transform: rotate(184deg); }
.progress-circle.p52 .value-bar { transform: rotate(187deg); }
.progress-circle.p53 .value-bar { transform: rotate(191deg); }
.progress-circle.p54 .value-bar { transform: rotate(194deg); }
.progress-circle.p55 .value-bar { transform: rotate(198deg); }
.progress-circle.p56 .value-bar { transform: rotate(202deg); }
.progress-circle.p57 .value-bar { transform: rotate(205deg); }
.progress-circle.p58 .value-bar { transform: rotate(209deg); }
.progress-circle.p59 .value-bar { transform: rotate(212deg); }
.progress-circle.p60 .value-bar { transform: rotate(216deg); }
.progress-circle.p61 .value-bar { transform: rotate(220deg); }
.progress-circle.p62 .value-bar { transform: rotate(223deg); }
.progress-circle.p63 .value-bar { transform: rotate(227deg); }
.progress-circle.p64 .value-bar { transform: rotate(230deg); }
.progress-circle.p65 .value-bar { transform: rotate(234deg); }
.progress-circle.p66 .value-bar { transform: rotate(238deg); }
.progress-circle.p67 .value-bar { transform: rotate(241deg); }
.progress-circle.p68 .value-bar { transform: rotate(245deg); }
.progress-circle.p69 .value-bar { transform: rotate(248deg); }
.progress-circle.p70 .value-bar { transform: rotate(252deg); }
.progress-circle.p71 .value-bar { transform: rotate(256deg); }
.progress-circle.p72 .value-bar { transform: rotate(259deg); }
.progress-circle.p73 .value-bar { transform: rotate(263deg); }
.progress-circle.p74 .value-bar { transform: rotate(266deg); }
.progress-circle.p75 .value-bar { transform: rotate(270deg); }
.progress-circle.p76 .value-bar { transform: rotate(274deg); }
.progress-circle.p77 .value-bar { transform: rotate(277deg); }
.progress-circle.p78 .value-bar { transform: rotate(281deg); }
.progress-circle.p79 .value-bar { transform: rotate(284deg); }
.progress-circle.p80 .value-bar { transform: rotate(288deg); }
.progress-circle.p81 .value-bar { transform: rotate(292deg); }
.progress-circle.p82 .value-bar { transform: rotate(295deg); }
.progress-circle.p83 .value-bar { transform: rotate(299deg); }
.progress-circle.p84 .value-bar { transform: rotate(302deg); }
.progress-circle.p85 .value-bar { transform: rotate(306deg); }
.progress-circle.p86 .value-bar { transform: rotate(310deg); }
.progress-circle.p87 .value-bar { transform: rotate(313deg); }
.progress-circle.p88 .value-bar { transform: rotate(317deg); }
.progress-circle.p89 .value-bar { transform: rotate(320deg); }
.progress-circle.p90 .value-bar { transform: rotate(324deg); }
.progress-circle.p91 .value-bar { transform: rotate(328deg); }
.progress-circle.p92 .value-bar { transform: rotate(331deg); }
.progress-circle.p93 .value-bar { transform: rotate(335deg); }
.progress-circle.p94 .value-bar { transform: rotate(338deg); }
.progress-circle.p95 .value-bar { transform: rotate(342deg); }
.progress-circle.p96 .value-bar { transform: rotate(346deg); }
.progress-circle.p97 .value-bar { transform: rotate(349deg); }
.progress-circle.p98 .value-bar { transform: rotate(353deg); }
.progress-circle.p99 .value-bar { transform: rotate(356deg); }
.progress-circle.p100 .value-bar { transform: rotate(360deg); }
.progres-circle{
    animation: loading-2 1.5s linear forwards 1.8s;
}
@keyframes loading-1{
    0%{
        -webkit-transform: rotate(0deg);
        transform: rotate(0deg);
    }
    100%{
        -webkit-transform: rotate(180deg);
        transform: rotate(180deg);
    }
}
@keyframes loading-2{
    0%{
        -webkit-transform: rotate(0deg);
        transform: rotate(0deg);
    }
    100%{
        -webkit-transform: rotate(144deg);
        transform: rotate(144deg);
    }
}
@keyframes loading-3{
    0%{
        -webkit-transform: rotate(0deg);
        transform: rotate(0deg);
    }
    100%{
        -webkit-transform: rotate(90deg);
        transform: rotate(90deg);
    }
}
@keyframes loading-4{
    0%{
        -webkit-transform: rotate(0deg);
        transform: rotate(0deg);
    }
    100%{
        -webkit-transform: rotate(36deg);
        transform: rotate(36deg);
    }
}
@keyframes loading-5{
    0%{
        -webkit-transform: rotate(0deg);
        transform: rotate(0deg);
    }
    100%{
        -webkit-transform: rotate(126deg);
        transform: rotate(126deg);
    }
}
@media only screen and (max-width: 990px){
    .progress-circle{ margin-bottom: 20px; }
}

<div class="progress-circle p10">
   <span>10%</span>
   <div class="left-half-clipper">
      <div class="first50-bar"></div>
      <div class="value-bar"></div>
   </div>
</div>
<div class="progress-circle p33">
   <span>33%</span>
   <div class="left-half-clipper">
      <div class="first50-bar"></div>
      <div class="value-bar"></div>
   </div>
</div>
<div class="progress-circle over50 p66">
   <span>66%</span>
   <div class="left-half-clipper">
      <div class="first50-bar"></div>
      <div class="value-bar"></div>
   </div>
</div>
<div class="progress-circle over50 p77">
   <span>77%</span>
   <div class="left-half-clipper">
      <div class="first50-bar"></div>
      <div class="value-bar"></div>
   </div>
</div>
<div class="progress-circle over50 p99">
   <span>99%</span>
   <div class="left-half-clipper">
      <div class="first50-bar"></div>
      <div class="value-bar"></div>
   </div>
</div>
<div class="progress-circle over50 p100">
   <span>100%</span>
   <div class="left-half-clipper">
      <div class="first50-bar"></div>
      <div class="value-bar"></div>
   </div>
</div>

​

Answer 1

因此，如果您隐藏黑色百分比圆，您将看到他们使用CSS创建了两个带边框的半圆形，并根据百分比值旋转它们：

​

​

下面是他们的半圆边框代码：

.progress-bar {
    animation: loading-2 1.5s linear forwards 1.8s;
    border-color: #049dff;
    border-top-right-radius: 80px;
    border-bottom-right-radius: 80px;
    border-left: 0;
    transform-origin: center left;
}

请注意，他们使用了animation-fill-mode: forwards来确保动画保持在结束的位置。