var bili = 0.5;//压缩后的图片尺寸,0.7就是70%var quality = 0.2;//压缩后图片的质量,数字越小图片越模糊var img = new Image();img.src = imagebase64;img.onload = function () {var newWidth = img.width*bili;//压缩后图片的宽度var newHei...