圆形百分比进度条

Question

我想在我的网站上有一个百分比圆指示器：

在本例中，显示为 75%。应该怎么做？我在图像文件中有黄色圆圈，但如果使用 CSS 更容易完成所有操作，那我没问题。

Answer 1

你试过吗？

<percent-display percent="75" side="" colors=""></percent-display>

来源：http://angularscript.com/angularjs-round-percentage-bar-directive-ngpercentdisplay/

Answer 2

考虑到进度条的形状（圆形 end/start），我建议使用 SVG。

演示：Radial progress bar

在以下示例中，进度使用 stroke-dasarray 属性进行动画处理，并且 % 数字使用 jQuery 递增：

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>

很遗憾，IE 不支持 svg SMIL 动画。要在 IE 支持下获得相同的结果，您可以使用像 snap.svg 这样的库并使用 JS 为 stroke-dasharray 属性设置动画：

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 3

演示：CODEPEN

这是我尝试获取百分比圆指示器的尝试：

路径绘制了两个拱门，我设置了 stroke-dasharray。我们真的不需要设置 dasharray，因为稍后我们用 javascript.

设置了它

Html

<svg class="circles" viewbox="0 0 200 200">
  <g id="first">
    <circle r="50" cx="100" cy="100" fill="#fb0"/>
    <path fill="none" 
          stroke-linecap="round"
          stroke-width="7" 
          stroke="#ffa"
          stroke-dasharray="250,250"
          d="M100 60 
             A1 1 0 0 1 100 140
             A1 1 0 0 1 100 60"/>
    <text class="circ-text"
          text-anchor="middle"
          x="100" y="100"
          font-size="12px"
          fill="#ffa"
          >percentage
    </text>
  </g>
</svg>

Javascirpt

获取#first path的路径。
获取破折号数组的长度：path.getTotalLength();
增加破折号数组直到满：setAttribute('stroke-dasharray', i+","+length); i 增加的地方。
找出我们的百分比：(count++/ticks)*100
将百分比添加到 svg 文本：text.innerHTML=(count/tick)*100

var path = document.querySelector('#first path');
var text = document.querySelector('#first .circ-text');
var length = path.getTotalLength();
var i = 0;
var count = 0;
var ticks = 50;
setInterval(function() {
  if (i < length+length/ticks) {
    path.setAttribute('stroke-dasharray', i+","+length);
    i+=length/ticks;
    text.innerHTML=Math.round((count++/ticks)*100);
  }

}, 100);

var path = document.querySelector('#first path');
var text = document.querySelector('#first .circ-text');
var length = path.getTotalLength();
var i = 0;
var count = 0;
var ticks = 50;
setInterval(function() {
  if (i < length+length/ticks) {
   path.setAttribute('stroke-dasharray', i+","+length);
    i+=length/ticks;
    text.innerHTML=Math.round((count++/ticks)*100);
  }
  
}, 100);

<svg class="circles" viewbox="0 0 500 200">
  <g id="first">
    <circle r="50" cx="100" cy="100" fill="#fb0" />
    <path fill="none" stroke-linecap="round" stroke-width="7" stroke="#ffa" stroke-dasharray="250,250" d="M100 60 A1 1 0 0 1 100 140
       A1 1 0 0 1 100 60" />
    <text class="circ-text" text-anchor="middle" x="100" y="100" font-size="12px" fill="#ffa">percentage</text>
  </g>

Answer 4

纯HTML/CSS溶液

简而言之，我使用 CSS border-radius 和 z-index 属性在橙色中心圆和橙色外环下方创建了一个白色半圆。最初，半圆完全隐藏在左侧的附加橙色层后面，但随着它围绕中心轴旋转（通过 CSS transform: rotate()），其外边缘逐渐显露出来，创建进度条的外观。一旦进度条通过中间点，就需要额外的技巧（有关详细信息，请参见下面的代码段）。

所有这些都是使用纯 HTML 和 CSS 完成的，除了使用 JavaScript 的动画。它可能看起来比基于 SVG 的解决方案需要更多的代码，但标记实际上要简单得多，这在我看来是一个很好的选择。

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>

请注意，一旦进度条到达中间点，fiftyPlus class 就会添加到容器元素中。这会在圆圈的右半部分添加一个静态进度条。没有它，进度会从右侧流出，而不是填充到左侧。

Answer 5

圆形百分比进度条使用Canvas ...

var ctx = document.getElementById('circularLoader').getContext('2d');
var al = 0;
var start = 4.72;
var cw = ctx.canvas.width;
var ch = ctx.canvas.height; 
var diff;
function progressSim(){
 diff = ((al / 100) * Math.PI*2*10).toFixed(2);
 ctx.clearRect(0, 0, cw, ch);
 ctx.lineWidth = 17;
 ctx.fillStyle = '#4285f4';
 ctx.strokeStyle = "#4285f4";
 ctx.textAlign = "center";
 ctx.font="28px monospace";
 ctx.fillText(al+'%', cw*.52, ch*.5+5, cw+12);
 ctx.beginPath();
 ctx.arc(100, 100, 75, start, diff/10+start, false);
 ctx.stroke();
 if(al >= 100){
  clearTimeout(sim);
     // Add scripting here that will run when progress completes
 }
 al++;
}
var sim = setInterval(progressSim, 50);

<div id="loader">
 <canvas id="circularLoader" width="200" height="200"></canvas>
</div>

查看演示：- http://codingflag.in/mysketch.php?sketch=9

圆形百分比进度条

Circular percent progress bar

html

css

svg

css-shapes