以下svg仅以chrome / chromium呈现。在其他浏览器中不抽取。例如。火狐,野生动物园。 我创造了jsfiddle
link to jsfiddle of the problem
<!DOCTYPE html>
<html>
<head>
<title>color test</title>
<style type="text/css">
canvas {
border: 1px solid black;
}
</style>
</head>
<body>
<canvas id="c" width="400" height="400"></canvas>
<script type="text/javascript">
var canvas = document.getElementById('c');
var ctx = canvas.getContext('2d');
var data = svg_data; // please see in the jsfiddle
var DOMURL = window.URL || window.webkitURL || window;
var img = new Image();
var svg = new Blob([data], {type: 'image/svg+xml'});
var url = DOMURL.createObjectURL(svg);
console.log(url);
window.open(url);
img.onload = function() {
ctx.drawImage(img, 0, 0);
DOMURL.revokeObjectURL(url);
}
img.src = url;
</script>