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-   -   Async Attribute (http://p2p.wrox.com/book-professional-javascript-web-developers-3rd-edition/99533-async-attribute.html)

brsastre May 30th, 2017 09:34 PM

Async Attribute
An excerpt from Page 18 Third Edition, about Async attribute:

"The purpose of specifying an async script is to indicate that the page need not wait for the script to be downloaded and executed before continuing to load"

I have found a couple of resources/articles that show that the page does need to wait for async scripts to be executed (not downloaded) to continue the parsing:

source 1:

source 2:

So, does async scripts block the parsing when being executed, or not?


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