javascript - 使用 Bootstrap 圈出进度条

Question

有什么方法可以创建具有多个不同值的圆:

• 从 0 到 50 - 蓝色
• 从 50 到 60 - 红色
• 60 到 100 种黄色，如下图所示

提前致谢

Answer 1

类似下面的内容:

依赖:jQuery

function sliceSize(dataNum, dataTotal) {
  return (dataNum / dataTotal) * 360;
}
function addSlice(sliceSize, pieElement, offset, sliceID, color) {
  $(pieElement).append("<div class='slice "+sliceID+"'><span></span></div>");
  var offset = offset - 1;
  var sizeRotation = -179 + sliceSize;
  $("."+sliceID).css({
    "transform": "rotate("+offset+"deg) translate3d(0,0,0)"
  });
  $("."+sliceID+" span").css({
    "transform"       : "rotate("+sizeRotation+"deg) translate3d(0,0,0)",
    "background-color": color
  });
}
function iterateSlices(sliceSize, pieElement, offset, dataCount, sliceCount, color) {
  var sliceID = "s"+dataCount+"-"+sliceCount;
  var maxSize = 179;
  if(sliceSize<=maxSize) {
    addSlice(sliceSize, pieElement, offset, sliceID, color);
  } else {
    addSlice(maxSize, pieElement, offset, sliceID, color);
    iterateSlices(sliceSize-maxSize, pieElement, offset+maxSize, dataCount, sliceCount+1, color);
  }
}
function createPie(dataElement, pieElement) {
  var listData = [];
  $(dataElement+" span").each(function() {
    listData.push(Number($(this).html()));
  });
  var listTotal = 0;
  for(var i=0; i<listData.length; i++) {
    listTotal += listData[i];
  }
  var offset = 0;
  var color = [
    "cornflowerblue", 
    "olivedrab", 
    "orange", 
    "tomato", 
    "crimson", 
    "purple", 
    "turquoise", 
    "forestgreen", 
    "navy", 
    "gray"
  ];
  for(var i=0; i<listData.length; i++) {
    var size = sliceSize(listData[i], listTotal);
    iterateSlices(size, pieElement, offset, i, 0, color[i]);
    $(dataElement+" li:nth-child("+(i+1)+")").css("border-color", color[i]);
    offset += size;
  }
}
createPie(".pieID.legend", ".pieID.pie");

@import url(http://fonts.googleapis.com/css?family=Open+Sans:400,700);

@keyframes bake-pie {
  from {
    transform: rotate(0deg) translate3d(0,0,0);
  }
}

body {
  font-family: "Open Sans", Arial;
  background: #EEE;
}
main {
  width: 400px;
  margin: 30px auto;
}
section {
  margin-top: 30px;
}
.pieID {
  display: inline-block;
  vertical-align: top;
}
.pie {
  height: 200px;
  width: 200px;
  position: relative;
  margin: 0 30px 30px 0;
}
.pie::before {
  content: "";
  display: block;
  position: absolute;
  z-index: 1;
  width: 100px;
  height: 100px;
  background: #EEE;
  border-radius: 50%;
  top: 50px;
  left: 50px;
}
.pie::after {
  content: "";
  display: block;
  width: 120px;
  height: 2px;
  background: rgba(0,0,0,0.1);
  border-radius: 50%;
  box-shadow: 0 0 3px 4px rgba(0,0,0,0.1);
  margin: 220px auto;
  
}
.slice {
  position: absolute;
  width: 200px;
  height: 200px;
  clip: rect(0px, 200px, 200px, 100px);
  animation: bake-pie 1s;
}
.slice span {
  display: block;
  position: absolute;
  top: 0;
  left: 0;
  background-color: black;
  width: 200px;
  height: 200px;
  border-radius: 50%;
  clip: rect(0px, 200px, 200px, 100px);
}
.legend {
  list-style-type: none;
  padding: 0;
  margin: 0;
  background: #FFF;
  padding: 15px;
  font-size: 13px;
  box-shadow: 1px 1px 0 #DDD,
              2px 2px 0 #BBB;
}
.legend li {
  width: 110px;
  height: 1.25em;
  margin-bottom: 0.7em;
  padding-left: 0.5em;
  border-left: 1.25em solid black;
}
.legend em {
  font-style: normal;
}
.legend span {
  float: right;
}
footer {
  position: fixed;
  bottom: 0;
  right: 0;
  font-size: 13px;
  background: #DDD;
  padding: 5px 10px;
  margin: 5px;
}

<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.9.1/jquery.min.js"></script>
<main>
  
  <section>
    <div class="pieID pie">
      
    </div>
    <ul class="pieID legend">
      <li>
        <em>Cats</em>
        <span>868</span>
      </li>
      <li>
        <em>Slugs</em>
        <span>344</span>
      </li>
      <li>
        <em>Aliens</em>
        <span>1145</span>
      </li>
    </ul>
  </section>
  
</main>

引用:http://codepen.io/ejsado/pen/cLrlm/