React TutorialLesson 27Free preview

React Conditionals

This lesson is part of React · All levels

Summary

Conditional rendering makes the components display different displays according to specific conditions. Commonly used patterns are if or else outside JSX, ternary operators, and && logic to hide elements. Just like a regular JavaScript branch, the key is to make sure only one view is active at a time.

Key points

If and else are written outside JSX or in the auxiliary function
The ternary operator is suitable for two display branches
Logic && displays elements only when the condition is worth true
Save the JSX conditional on the variable when the logic is long

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