CODEWITHSUNDEEP
javascriptgoogle-apps-script
Hasanudin H. Syafaat
Hasanudin H. Syafaat

Reputation: 13

Google Apps Script how detect typeof blob?

var data = Utilities.newBlob("THis is blob data", MimeType.PLAIN_TEXT, 'test.txt');

if (  ?? ) then Logger.log('yes, this is blob') ;

How to detect data is blob? (not object)

instanceof Blob
// or
instanceof BlobSource

Result: ReferenceError: Blob or BlobSource is not defined

instanceof GoogleAppsScript.Base.Blob;
// ReferenceError: `GoogleAppsScript` is not defined

typeof data
// result: object

Object.prototype.toString.call(data);
// result: [object Object]

Upvotes: 1

Views: 579

Answers (1)

user555121
user555121

Reputation:

Try using duck typing:

if (typeof data.copyBlob === 'function')
{
  // it's probably a blob
  console.log('yep');
}

Reference: Class Blob

Upvotes: 5

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