What does this tag attribute mean_html/css_WEB-ITnose

onload="btn.disabled = false; "What does this mean? Why can it still be used like this?

Reply to the discussion (solution)

Personally think this way onload="document.getElementById('btn').disabled;"
Find the correct solution

Most browsers seem to be able to support this writing method. Its function is the same as the writing method on the first floor, but the writing method on the first floor is more standard.
Recommended.

Do you mean to make that button available after the image is loaded?

Learned