javascript - Safari浏览器无法将Canvas toBlob识别为功能(Canvas toBlob is not recognized as a function in safari)

Question

I am able to download an image in Chrome & Firefox using the code below but in Safari it's throwing this error:

(我可以使用以下代码在Chrome和Firefox中下载图片，但在Safari中会抛出此错误：)

TypeError: 'undefined' is not a function (evaluating 'canvas.toBlob(blobCallback('wallpaperdeae'))')

(TypeError：'undefined'不是一个函数（评估'canvas.toBlob（blobCallback（'wallpaperdeae'））'）)

$("#save").click(function(){

   function blobCallback(iconName) {
        return function (b) {

            var a = document.getElementById('download');
            a.download = iconName + ".jpg";
            a.href = window.URL.createObjectURL(b);
        }
    }
    canvas.toBlob(blobCallback('wallpaperdeae'));

});

  ask by Bikshu s translate from so