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Concept vault
React Concepts
Master these core concepts one at a time.
Components
Components are small parts you combine to build the UI.
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JSX
JSX lets you write UI tags in JavaScript.
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Props
Props are values you give a component.
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State
PREMIUMState is memory that changes as users interact.
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useEffect
PREMIUMuseEffect runs code after the UI is shown.
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Event Handling
PREMIUMEvents fire when users click or type.
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Lists and Keys
PREMIUMLists let you show many items from data.
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Conditional Rendering
PREMIUMConditionals decide what the user sees.
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Forms
PREMIUMReact forms keep input values in state.
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Hooks Rules
PREMIUMHooks must be called the same way each time.
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