Web Reference: To declare a ref inside a class component, call createRef and assign its result to a class field: // ... If you now pass ref={this.inputRef} to an in your JSX, React will populate this.inputRef.current with the input DOM node. For example, here is how you make a button that focuses the input: Focus the input. ); } } Refs are created using React.createRef() and attached to React elements via the ref attribute. Refs are commonly assigned to an instance property when a component is constructed so they can be referenced throughout the component. Jul 28, 2025 · ReactJS Refs can be created using React.createRef () function and attached to a React element via the ref attribute. When a class component is constructed, the Refs are commonly assigned to an instance property so that they can be referenced in the component.
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