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Why should a function call be avoided in an Angular template expression?

A It is not supported syntactically
B It is re-evaluated on every change detection cycle, potentially hundreds of times a second
C It breaks type checking
D It prevents lazy loading

Answer

It is re-evaluated on every change detection cycle, potentially hundreds of times a second

Precompute the value in the component or use a pure pipe. This is one of the most common causes of poor Angular runtime performance.

All Angular MCQs

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