如何让Canvas标签自适应设备宽度？

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怎么设置Canvas标签的宽度可以让它自适应占满设备或浏览器的宽度？

11 years, 9 months ago

喜多嶋時透 11 years, 9 months ago

JavaScript 方法

function draw() {
  var ctx = (a canvas context);
  ctx.canvas.width  = window.innerWidth;
  ctx.canvas.height = window.innerHeight;
}

CSS方法

html, body {
  width:  100%;
  height: 100%;
  margin: 0px;
}

answered 11 years, 9 months ago

AiOtuka answered 11 years, 9 months ago