How to allow only numbers in textbox in reactjs?

Question

How to allow only numbers in textbox in reactjs using regular expression only?

Answer 1

A simple solution, using hooks:

const [age, setAge] = useState();

const handleChange = (e) => {
  const value = e.target.value.replace(/\D/g, "");
  setAge(value);
};

return (
  

    
  
);

Example: https://codesandbox.io/s/adoring-minsky-9sqvv