March 2019
Intermediate to advanced
350 pages
7h 28m
English
Content preview from React Design Patterns and Best Practices - Second Edition
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Common solutions
We have seen how using PureComponent can help us to tell React whether a subtree has to be rendered or not. If utilized in the right way, it could improve the performance of our applications a lot. It is also important to stress that it should be used only after the application has been monitored and the bottleneck has been found.
There are some tricky situations where extending PureComponent does not give the expected results; usually, the cause is that our props or state attributes are changing even if we think they are not. Sometimes it is not easy to figure out which props are causing the component to re-render or we do not know which components can be optimized with PureComponent.
Most of the time, refactoring the components ...
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