How to use js to convert images to base64

This time I will show you how to use js to convert images to base64, and what are the precautions on how to use js to convert images to base64. The following is a practical case, let's take a look.

Method 1: Blob and FileReader objects

Implementation principle:

Use xhr to request images, and set the returned file type to Blob object [xhr .responseType = "blob"]

Use FileReader object to receive blob

Method 2: canvas.toDataURL() method

Implementation principle:

Use the canvas.toDataURL() method

Need to solve the cross-domain problem of images image.crossOrigin = '';

Used the $.Deferred() method of the Jquery library

I believe you have mastered the method after reading the case in this article. For more exciting information, please pay attention to other related articles on the php Chinese website!

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