Last Updated on 6 years by School4Seo Team
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- Google Mobile Sites Exam – All Q&As
- * Updated on 25-Apr-2019
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True or false: JavaScript can block DOM construction unless explicitly declared as async.
- False
- True
Correct answer is:
- True
Explanation: JavaScript is powerful, it can modify just about every aspect of the page, but it can also block DOM construction and delay page rendering (see also Adding interactivity with JavaScript). To keep JavaScript from delaying page rendering, AMP allows only asynchronous JavaScript.
Read more here: https://support.google.com/partners/answer/7336293[1234]