javascript - Draw More Arc Canvas -


hello people i'd know how draw more arc inside canvas, need draw circles:

enter image description here

so write responsive code make canvas responsive:

    var mycanvas = document.getelementbyid('mycanvas');      var ctx = mycanvas.getcontext('2d');      var centerx = mycanvas.width / 2;      var centery = mycanvas.height / 2;      var borderwidth = 20;      var bordercolor = '#2dc36a';      var radius = (mycanvas.width / 2) - (borderwidth / 2);      // days arc canvas background      ctx.beginpath();      ctx.arc(centerx, centery, radius, 0, 2 * math.pi, false);      ctx.linewidth = borderwidth;      ctx.strokestyle = bordercolor;      ctx.stroke();      ctx.closepath();      // make canvas responsive      function makeresponsive() {          var containerwidth = $('.progress-nested').width();          $('.progress-nested').height(containerwidth);          var canvaselements = ['#mycanvas'];              $('#mycanvas').width(containerwidth).height(containerwidth);      }      makeresponsive(); // make canvas responsive in document ready      $(window).resize(function () {          makeresponsive(); // make canvas responsive in window resize      });
#progress {    width: 100%;    padding: 5px;  }  .progress-nested{      position:relative;      border-radius:50%;  }  canvas {    display:block;    position:absolute;  }
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script>  <script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/js/bootstrap.min.js"></script>  <link href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css" rel="stylesheet"/>            <div id="progress">          <div class="container">              <div class="row">                  <div class="col-xs-3 col-md-2 col-md-offset-2">                      <div class="progress-nested">                          <canvas id="mycanvas" width="250" height="250"></canvas>                      </div>                  </div>              </div>          </div>      </div>
note: please run code snippet in full page


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