Quiz Question 1 of 6
What is the main difference between the async and defer attributes when used in a <script> tag in terms of their effect on page rendering and JavaScript execution?
Choose the correct answer below:
-
A
asyncallows script execution before the page finishes loading, whiledeferprevents the script from downloading until the HTML parsing is completed. -
B
asyncdownloads the script without blocking page rendering and executes it immediately after downloading, whiledeferdownloads the script and executes it only after the HTML parsing is complete. -
C
asyncanddeferboth delay script execution until the entire page is fully loaded. -
D
deferdownloads the script immediately and executes it before HTML parsing begins, whileasyncdelays both downloading and execution until the end of HTML parsing.