Circular percent progress bar

Question

I would like to have an percent circle indicator on my site:

In this case it's showing 75%. How should this be done? I have the yellow circle in a image-file, but if it's easier to, some how, do it all using CSS, that's okay with me.

Answer 1

Considering the shape of the progress bar (rounded end/start) I would suggest using SVG.

DEMO: Radial progress bar

In the following example, the progress is animated with the stroke-dasarray attribute and the % numbers are incremented with jQuery:

var count = $(('#count'));
$({ Counter: 0 }).animate({ Counter: count.text() }, {
  duration: 5000,
  easing: 'linear',
  step: function () {
    count.text(Math.ceil(this.Counter)+ "%");
  }
});

body{text-align:center;font-family: 'Open Sans', sans-serif;}
svg{width:25%;}

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<svg id="animated" viewbox="0 0 100 100">
  <circle cx="50" cy="50" r="45" fill="#FDB900"/>
  <path fill="none" stroke-linecap="round" stroke-width="5" stroke="#fff"
        stroke-dasharray="251.2,0"
        d="M50 10
           a 40 40 0 0 1 0 80
           a 40 40 0 0 1 0 -80">
    <animate attributeName="stroke-dasharray" from="0,251.2" to="251.2,0" dur="5s"/>           
  </path>
  <text id="count" x="50" y="50" text-anchor="middle" dy="7" font-size="20">100%</text>
</svg>

---

Unfortunatly IE doesn't support svg SMIL animations. To achieve the same result with IE support, you can use a library like snap.svg and animate the stroke-dasharray attribute with JS :

var count = $(('#count'));
$({ Counter: 0 }).animate({ Counter: count.text() }, {
  duration: 5000,
  easing: 'linear',
  step: function () {
    count.text(Math.ceil(this.Counter)+ "%");
  }
});

var s = Snap('#animated');
var progress = s.select('#progress');

progress.attr({strokeDasharray: '0, 251.2'});
Snap.animate(0,251.2, function( value ) {
    progress.attr({ 'stroke-dasharray':value+',251.2'});
}, 5000);

body{text-align:center;font-family:sans-serif;}
svg{width:25%;}

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/snap.svg/0.3.0/snap.svg-min.js"></script>
<svg id="svg" viewbox="0 0 100 100">
  <circle cx="50" cy="50" r="45" fill="#FDB900"/>
  <path fill="none" stroke-linecap="round" stroke-width="5" stroke="#fff"
        stroke-dasharray="1,250.2"
        d="M50 10
           a 40 40 0 0 1 0 80
           a 40 40 0 0 1 0 -80"/>
  <text x="50" y="50" text-anchor="middle" dy="7" font-size="20">1%</text>
</svg>
<svg viewbox="0 0 100 100">
  <circle cx="50" cy="50" r="45" fill="#FDB900"/>
  <path fill="none" stroke-linecap="round" stroke-width="5" stroke="#fff"
        stroke-dasharray="125.6,125.6"
        d="M50 10
           a 40 40 0 0 1 0 80
           a 40 40 0 0 1 0 -80"/>
  <text x="50" y="50" text-anchor="middle" dy="7" font-size="20">50%</text>
</svg>

<svg id="animated" viewbox="0 0 100 100">
  <circle cx="50" cy="50" r="45" fill="#FDB900"/>
  <path id="progress" stroke-linecap="round" stroke-width="5" stroke="#fff" fill="none"
        d="M50 10
           a 40 40 0 0 1 0 80
           a 40 40 0 0 1 0 -80">
  </path>
  <text id="count" x="50" y="50" text-anchor="middle" dy="7" font-size="20">100%</text>
</svg>

Answer 2

Pure HTML/CSS Solution

In short, I used the CSS border-radius and z-index properties to create a white half circle layered beneath an orange center circle and orange outer ring. Initially, the half-circle is completely hidden behind an additional layer of orange on the left side, but its outer edge is gradually revealed as it rotates around the center axis (via CSS transform: rotate()), creating the appearance of a progress bar. Additional trickery is required once the progress bar passes the halfway point (see below the snippet for more info).

All of this was done with pure HTML and CSS, except the animation, which uses JavaScript. It may appear to require more code than the SVG-based solutions, but the markup is actually much simpler, which makes it a good alternative in my opinion.

function setProgress(elem, percent) {
  var
    degrees = percent * 3.6,
    transform = /MSIE 9/.test(navigator.userAgent) ? 'msTransform' : 'transform';
  elem.querySelector('.counter').setAttribute('data-percent', Math.round(percent));
  elem.querySelector('.progressEnd').style[transform] = 'rotate(' + degrees + 'deg)';
  elem.querySelector('.progress').style[transform] = 'rotate(' + degrees + 'deg)';
  if(percent >= 50 && !/(^|\s)fiftyPlus(\s|$)/.test(elem.className))
    elem.className += ' fiftyPlus';
}

(function() {
  var
    elem = document.querySelector('.circlePercent'),
    percent = 0;
  (function animate() {
    setProgress(elem, (percent += .25));
    if(percent < 100)
      setTimeout(animate, 15);
  })();
})();

.circlePercent {
  position: relative;
  top: 26px;
  left: 26px;
  width: 96px;
  height: 96px;
  border-radius: 50%;
  background: orange;
}
.circlePercent:before,
.circlePercent > .progressEnd {
  position: absolute;
  z-index: 3;
  top: 2px;
  left: 45px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: white;
  -ms-transform-origin: 3px 46px;
  transform-origin: 3px 46px;
  content: "";
}
.circlePercent:after,
.circlePercent > .progress {
  position: absolute;
  -ms-transform-origin: 48px 48px;
  transform-origin: 48px 48px;
  z-index: 0;
  top: 0;
  left: 0;
  width: 48px;
  height: 96px;
  border-radius: 48px 0 0 48px;
  background: orange;
  content: "";
}
.circlePercent.fiftyPlus:after {
  background: white;
  -ms-transform: rotate(180deg);
  transform: rotate(180deg);
}
.circlePercent > .progress.progress {
  background: white;
}
.circlePercent > .counter {
  position: absolute;
  box-sizing: border-box;
  z-index: 2;
  width: 100px;
  height: 100px;
  margin-top: -2px;
  margin-left: -2px;
  border-radius: 50%;
  border: 4px solid orange;
}
.circlePercent > .counter:before {
  position: absolute;
  z-index: 1;
  top: 50%;
  margin-top: -13px;
  width: 100%;
  height: 26px;
  font-size: 26px;
  line-height: 26px;
  font-family: sans-serif;
  text-align: center;
  color: white;
  content: attr(data-percent) "%";
}
.circlePercent > .counter:after {
  position: absolute;
  width: 80px;
  height: 80px;
  top: 6px;
  left: 6px;
  border-radius: 50%;
  background: orange;
  content: "";
}
.circlePercent > .counter[data-percent="100"] {
  background: white;
}

<div class="circlePercent">
  <div class="counter" data-percent="0"></div>
  <div class="progress"></div>
  <div class="progressEnd"></div>
</div>

Notice that the fiftyPlus class is added to the container element once the progress bar reaches the halfway point. This adds a static progress bar to the right half of the circle. Without it, the progress will appear to drain out of the right side instead of filling in the left side.