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Comment on Make Your UI More Responsive with HTML5 Web Workers

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What's a practical example of something that can't be done with proper evented programming, and has to be implemented using web workers?

If you need to perform CPU heavy calculations or processing of video/audio it just doesn't make sense to do it on the client even with web workers.

pdf.js uses background workers for parsing/processing pdf pages. really any other native format which could potentially js-processed for display in a browser directly

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