更改半径值时 SVG 进度不起作用.如何在不同大小的情况下使用此进度

SVG progress not working when change the radius value. how to use this progress in different sizes?

本文关键字：情况下 不起作用 SVG      更新时间：2023-09-26

我想在我的产品中使用SVG Progress作为加载。我在代码笔中的 SVG 进度下方找到了这个。当它的半径值为 90 时，它可以正常工作。如果我更改半径值，它将不起作用。javascript中的计算有误。

谢谢。

$('#percent').on('change', function(){
  var val = parseInt($(this).val());
  var $circle = $('#svg #bar');
  
  if (isNaN(val)) {
   val = r; 
  }
  else{
    var r = $circle.attr('r');
    var c = Math.PI*(r*2);
   
    if (val < 0) { val = 0;}
    if (val > 100) { val = 100;}
    
    var pct = ((100-val)/100)*c;
    
    $circle.css({ strokeDashoffset: pct});
    
    $('#cont').attr('data-pct',val);
  }
});
#svg circle {
  stroke-dashoffset: 0;
  transition: stroke-dashoffset 1s linear;
  stroke: #666;
  stroke-width: 5px;
}
#svg #bar {
  stroke: #FF9F1E;
}
#cont {
  display: block;
  height: 200px;
  width: 200px;
  margin: 2em auto;
  border-radius: 100%;
  position: relative;
}
#cont:after {
  position: absolute;
  display: block;
  height: 160px;
  width: 160px;
  left: 50%;
  top: 50%;
  content: attr(data-pct)"%";
  margin-top: -80px;
  margin-left: -80px;
  border-radius: 100%;
  line-height: 160px;
  font-size: 2em;
  text-shadow: 0 0 0.5em black;
}
input {
  color: #000;
}
/* Make things perty */
html {  height: 100%;}
body { font-family: 'Source Sans Pro', Helvetica, Arial, sans-serif; background: url(http://www.jmchristensendesign.com/wp-content/themes/jmcdsn/images/intro_default-background.jpg); color: #fff; height: 100%; padding-top: 2em; text-align: center;}
h1, h2{ margin: 0; text-transform: uppercase;text-shadow: 0 0 0.5em black;}
h2 { font-weight: 300}
input { border: 1px solid #666; background: #333; color: #fff; padding: 0.5em; box-shadow: none; outline: none !important; margin: 1em  auto; text-align: center;}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<div id="cont" data-pct="100">
<svg id="svg" width="200" height="200" viewPort="0 0 100 100" version="1.1" xmlns="http://www.w3.org/2000/svg">
  <circle r="90" cx="100" cy="100" fill="transparent" stroke-dasharray="565.48" stroke-dashoffset="0"></circle>
  <circle id="bar" r="90" cx="100" cy="100" fill="transparent" stroke-dasharray="565.48" stroke-dashoffset="0"></circle>
</svg>
</div>
<label for="percent">Type a percent!</label>
<input id="percent" name="percent">

如果要修改r=""还需要调整stroke-dasharray=""

例如，请参阅我的片段："设置stroke-dasharray是您的工作"

<circle r="30" cx="100" cy="100" fill="transparent" stroke-dasharray="200" stroke-dashoffset="0"></circle>      
<circle id="bar" r="30" cx="100" cy="100" fill="transparent" stroke-dasharray="188.50" stroke-dashoffset="0"></circle>


$('#percent').on('change', function(){
  var val = parseInt($(this).val());
  var $circle = $('#svg #bar');
  
  if (isNaN(val)) {
   val = r; 
  }
  else{
    var r = $circle.attr('r');
    var c = Math.PI*(r*2);
   
    if (val < 0) { val = 0;}
    if (val > 100) { val = 100;}
    
    var pct = ((100-val)/100)*c;
    
    $circle.css({ strokeDashoffset: pct});
    
    $('#cont').attr('data-pct',val);
  }
});
#svg circle {
  stroke-dashoffset: 0;
  transition: stroke-dashoffset 1s linear;
  stroke: #666;
  stroke-width: 5px;
}
#svg #bar {
  stroke: #FF9F1E;
}
#cont {
  display: block;
  height: 200px;
  width: 200px;
  margin: 2em auto;
  border-radius: 100%;
  position: relative;
}
#cont:after {
  position: absolute;
  display: block;
  height: 160px;
  width: 160px;
  left: 50%;
  top: 50%;
  content: attr(data-pct)"%";
  margin-top: -80px;
  margin-left: -80px;
  border-radius: 100%;
  line-height: 160px;
  font-size: 2em;
  text-shadow: 0 0 0.5em black;
}
input {
  color: #000;
}
/* Make things perty */
html {  height: 100%;}
body { font-family: 'Source Sans Pro', Helvetica, Arial, sans-serif; background: url(http://www.jmchristensendesign.com/wp-content/themes/jmcdsn/images/intro_default-background.jpg); color: #fff; height: 100%; padding-top: 2em; text-align: center;}
h1, h2{ margin: 0; text-transform: uppercase;text-shadow: 0 0 0.5em black;}
h2 { font-weight: 300}
input { border: 1px solid #666; background: #333; color: #fff; padding: 0.5em; box-shadow: none; outline: none !important; margin: 1em  auto; text-align: center;}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<div id="cont" data-pct="100">
<svg id="svg" width="200" height="200" viewPort="0 0 100 100" version="1.1" xmlns="http://www.w3.org/2000/svg">
  <circle r="30" cx="100" cy="100" fill="transparent" stroke-dasharray="200" stroke-dashoffset="0"></circle>
  <circle id="bar" r="30" cx="100" cy="100" fill="transparent" stroke-dasharray="188.50" stroke-dashoffset="0"></circle>
</svg>
</div>
<label for="percent">Type a percent!</label>
<input id="percent" name="percent">

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