How can I revoke an object URL only after it's downloaded?
问题 I'm saving a file in JavaScript using the following code: var a = document.createElement('a'); a.href = URL.createObjectURL(new Blob(['SOME DATA'])); a.download = 'some.dat'; a.click(); I want to revoke the URL (using URL.revokeObjectURL) once the file is downloaded. When is it safe to do so? Can I revoke it immediately after calling a.click() (which seems to work, but I'm not sure it's safe)? In a 's click event listener? Is there a way to make a click event listener run after the default