img.src = canvas.toDataURL('image/png'); } video.addEventListener('click', snapshot, false); 問題提示: Uncaught SecurityError: Failed to execute 'toDataURL' on 'HTMLCanvasElement': Tainted canvases may not be exported. 經(jīng)過查閱和分析,發(fā)現(xiàn)這個其實是由于視頻文件所在的域和圖片和頁面所在域不...
導出圖像:toDataURL() 1. drawImage() 顧名思義,該方法就是用于將圖像繪制與Canvas畫布當中,具體用法有三種: ① 在畫布上定位圖像:context.drawImage(img,x,y) ② 在畫布上定位圖像,并規(guī)定圖像的寬度和高度:context.drawImage(img,x,y,width,height) ...