Non-blocking JavaScript loading

Note: below is the translation of the article “Non-blocking JavaScript Downloads” , in which the author talks about the problems associated with connecting JavaScript files and the possible parallelization of their downloads. My comments further in italics.

About the author: Stoyan Stefanov is a web developer at Yahoo! in the Exceptional Performance group and oversees the development of YSlow , a performance measurement tool. He also made a significant contribution to the development of open source products, spoke at conferences and the author of technical texts. His latest book is Object-Oriented JavaScript .

External JavaScript files block the page loading and greatly affect its performance, but there is a fairly simple way out of this situation: use dynamic script tags and load scripts in parallel, thereby increasing the page loading speed and improving user experience.
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