Q57
Why do we need to use an onload event in the script tag after using the async attribute?
A.
Invoke code during page loading
B.
Invoke code during script loading
C.
Invoke code during downloading
AnswerD.
None of the mentioned
Answer: Option C
Solution
Answer: Option C
Solution:
When using async you don’t know when the file will be downloaded, so you can attach an onload event handler to the script tag. This will allow you to invoke or instantiate any code that will need to be run when the file is downloaded: