Typeerror: cannot read properties of null (reading ‘useref’)

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Explanation:

The error “TypeError: Cannot read properties of null (reading ‘useRef’)” occurs when the useRef hook is used on a variable that is null.

Example:

Let’s say we have a functional component in React that uses the useRef hook:


  import React, { useRef } from 'react';

  const ExampleComponent = () => {
    const refVariable = null;
    const ref = useRef(refVariable);
    
    return (
      

        
      

    );
  }

In the above example, we have initialized the refVariable to null. When we pass this variable to useRef, it throws an error because useRef expects a non-null value.

To fix this error, we need to make sure that we are passing a non-null value to useRef:


  import React, { useRef } from 'react';

  const ExampleComponent = () => {
    const refVariable = useRef(null);
    
    return (
      

        
      

    );
  }

In the updated example, we initialize the refVariable using useRef and pass null as the initial value. This avoids the “TypeError: Cannot read properties of null (reading ‘useRef’)” error.

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