Nov 13, 2019 · 1 min read


I followed your tutorial and have 2 question.

  1. Why have you opted to use ref for clearing the component value but still used onChange handler? I think you should either use a ref to get and reset the value or make a fully controlled input by passing value and onChange handler. Then you can use setFormState(“”) to clear.
  2. What does the exclamation point before “text” do in this case? Never seen it before.
    newTodosState.find((todo: TodoInterface) => todo.id === id)!.text = event.target.value;

Overall nice article, helped me to do something tangible in Typescript 👍

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