React.js - input losing focus when rerendering

Question

I am just writing to text input and in onChange event i call setState, so React rerenders my UI. The problem is that the text input always lose a f

Answer 1

included the next code in tag input:

ref={(input) => {
     if (input) {
         input.focus();
     }
 }}

Before:

 validEmail(e.target.value)}
/>

After:

 {
          if (input) {
             input.focus();
          }
      }}
      defaultValue={email}
      className="form-control"
      type="email"
      id="email"
      name="email"
      placeholder={"mail@mail.com"}
      maxLength="15"
      onChange={(e) => validEmail(e.target.value)}
/>