JSFiddle - React, Tailwind, and code Playground

HTML

<!-- 只有 Chrome / Safari 等 Webkit 核心的浏览器才能运行
    http://dribbble.com/shots/629733-App-UI-elements
-->
<span class="outer" onclick = "progress(80)">
    <span class="inner">
        <span id="text">0%</span>
    </span>
    <span class="end_mask"></span>
    <span class="start_mask"></span>
    <span class="mask1">
        <span class="prog"></span>
    </span>
    <span class="mask2">
        <span class="prog"></span>        
    </span>
    <span class="circle">
    </span>

</span>

<p style = "clear:both"><button onclick="reset()">Reset</button></p>

CSS

body{
    background-color:#ccc; 
    padding: 20px;
}
.outer {
    position:relative;
    display:block;
    width: 200px;
    height:200px;
    background-image:-webkit-linear-gradient(#999,#eee);
    border-radius:100px;
    padding:5px;
    float:left
}

.inner {
    position: absolute;
    z-index: 9;
    display:block;
    width: 140px;
    height:140px;
    background-color: #F0F3F6;
    border-radius: 70px;
    margin: 30px;
    box-shadow: 0px 2px 3px #333;
    
}

#text {
    display:block;
    width: 100%;
    text-align: center;
    line-height: 140px;
    font-family: Helvetica;
    font-size: 40px;
    color: #4B4F58;    
}

.circle {
    position: absolute;    
    top: 0;
    left:0;
    margin: 5px;
    z-index: 1;
    display: block;
    float: left;
    width: 200px;
    height: 200px;
    border-radius: 100px;
    background-image: -webkit-radial-gradient(circle, #fff 60px, #BFC8D0 85px, #4B4F58 100px);
}

.start_mask {
    display: block;
    width: 100px;
    height: 100px;
    background-image: -webkit-linear-gradient(right, transparent 95px, rgba(65,157,34,0.2) 100px, transparent 100px);
    position: absolute;
    top:5px;
    left:105px;
    z-index: 10;
    background-size: 100px 30px;
    background-repeat: no-repeat;
    opacity:0;
    
}    
.end_mask {
    display: block;
    width: 100px;
    height: 100px;
    background-image: -webkit-linear-gradient(left, transparent 95px, rgba(65, 157, 34, 0.2) 100px);
    position: relative;
    z-index: 10;
    background-size: 100px 30px;
    background-repeat: no-repeat;
    -webkit-transform-origin: right bottom;    
    opacity:0; 
    -webkit-transition-timing-function: linear;
}


/* for right 左透明，右填充 */
.mask1 {    
    position: absolute;
    top: 0;
    left:0;
    margin: 5px;
    z-index:2;
    display:block;
    width:200px;
    height:200px;
    -webkit-mask-image: -webkit-linear-gradient(left, transparent 100px, #000 100px); 
    
}

/* for left  左填充，右透明*/
.mask2 {    
   ...

JavaScript

var sec = 1;

function progress(num) {
    var right = document.querySelector('.mask1 .prog'),
        left = document.querySelector('.mask2 .prog'),
        startMask = document.getElementsByClassName('start_mask')[0],
        endMask = document.getElementsByClassName('end_mask')[0],
        text = document.getElementById('text');
        ang = 360 * ( num / 100 );
    console.log(ang, ang - 180);
    startMask.style.cssText = "opacity:1";
    var i = 0,
        m = setInterval(function(){if(i >= num) clearInterval(m);text.textContent = (i++)+'%';}, 10);
    if(num > 0 && num <= 50){
        right.style.cssText = "-webkit-transition-duration:"+sec+"s; -webkit-transform:rotate(" + ang + "deg)";
    }
    else if(num > 50 && num <= 100) {
        var rightTime = 50 * sec / num,
            leftTime = (num-50)* sec/num;
        right.style.cssText = "-webkit-transition-duration:"+rightTime+"s; -webkit-transform:rotate(180deg)";
        left.style.cssText = "-webkit-transition-delay:"+rightTime+"s; -webkit-transition-duration:"+leftTime+"s; -webkit-transform:rotate(" + (180-180) + "deg)";   
    
    }
    endMask.style.cssText = "-webkit-transition-duration:"+sec+"s; opacity:1; -webkit-transform:rotate(" + 180 + "deg)";    
}

function reset(){
    var right = document.querySelector('.mask1 .prog'),
        left = document.querySelector('.mask2 .prog'),
        startMask = document.getElementsByClassName('start_mask')[0],
        endMask = document.getElementsByClassName('end_mask')[0];
    right.style.cssText = left.style.cssText = startMask.style.cssText = endMask.style.cssText = "";
}