我有我的问题。这对于其他用户使用javascript（AnguarJs）保存图像和压缩图像应该会有所帮助。
https://github.com/oukan/angular-image- compress
var imageData = $scope.image1.compressed.dataURL.toString();
var byteCharacters = atob(imageData.replace(/^data:image\/(png|jpeg|jpg);base64,/, ''));
var byteNumbers = new Array(byteCharacters.length);
for (var i = 0; i < byteCharacters.length; i++) {
byteNumbers[i] = byteCharacters.charCodeAt(i);
}
var byteArray = new Uint8Array(byteNumbers);
var blob = new Blob([ byteArray ], {
type : undefined
});
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