How does JavaScript slow the web (and what to do about it)?

Note: Below is a translation of the article “How JavaScript is Slowing Down the Web” , which deals mainly with working with widgets: typical problems and methods for solving them.

One JavaScript string is the basis of most current blog technology. Widgets, media (photo / video) sharing, visitor tracking, advertisements. In many cases, a single line of JavaScript is all that an author needs to add something new to his blog. Problems begin when many, many of these lines come together ...

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