How can I console.log() a Blob object?

Question

I have a Blob object I want to inspect by logging its value. All I can see are type and size properties. Is there a way to do this?

Answer 1

Basic example on using a FileReader to look at the content in a blob

 var html= ['<a id="anchor">Hello World</a>']; var myBlob = new Blob(html, { type: 'text/xml'}); var myReader = new FileReader(); myReader.onload = function(event){ console.log(JSON.stringify(myReader.result)); }; myReader.readAsText(myBlob); 

Answer 2

First of all we should create a function for converting blob to base64:

const blobToBase64 = blob => {
  const reader = new FileReader();
  reader.readAsDataURL(blob);
  return new Promise(resolve => {
    reader.onloadend = () => {
      resolve(reader.result);
    };
  });
};

Then we can use this function to use it for console.log :

blobToBase64(blobData).then(res => {
  console.log(res); // res is base64 now
  // even you can click on it to see it in a new tab
});