要解决模糊问题,您需要重叠像素。您可以将值更改为-
context.moveTo(20.5, 0); context.lineTo(20.5, 50);
您还可以像这样设置高度和宽度-
canvas1 = document.getElementById(‘canvas'); canvas1.width = 250; canvas1.height = 250;
现在设置大小-
canvas1.style.width = "100px"; canvas1.style.height = "100px";