October 2017
Intermediate to advanced
280 pages
6h 50m
English
Content preview from Switching to Angular - Third Edition
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Web workers
JavaScript is known for its event loop. Usually, JavaScript programs are executed in a single thread and different events are scheduled by being pushed in a queue and processed sequentially in the order of their arrival. However, this computational strategy is not effective when one of the scheduled events requires a lot of computational time. In such cases, the event's handling will block the main thread, and all other events will not be handled until the time-consuming computation is complete and the execution passed to the next one in the queue. A simple example of this is a mouse click that triggers an event, in which the callback does some audio processing using the HTML5 audio API. If the processed audio track is big and ...
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