I do mobile photo clipping and upload pictures, and there will be a problem of automatic rotation of pictures under ios. Now I want to use canvas to deal with the cropped pictures, but canvas drawing pictures have not been displayed. Have you ever encountered, online, etc., urgent, thank you
my debugger shows that canvas is undefined, but I print this.$refs.iosCanvas directly.
canvas canvas size is defined in this way
<canvas width="100" height="100"></canvas>window.addEventListener("resize", resizeCanvas, false);
function resizeCanvas() {
w = canvas.width = window.innerWidth;
h = canvas.height = window.innerHeight;
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