Handle Form Submit

PHOTO

Sat Apr 17 2021 19:43:44 GMT+0000 (Coordinated Universal Time)

Saved by @Ivan2u #react.js

function AddForm() {
  const [sum, setSum] = useState(0);
  const [num, setNum] = useState(0);

  function handleChange(e) {
    setNum(e.target.value);
  }

  function handleSubmit(e) {
    setSum(sum + Number(num));
    e.preventDefault();
  }

  return <form onSubmit={handleSubmit}>
  <input type="number" value={num} onChange={handleChange} />
  <input type="submit" value="Add" />
  <p> Sum is {sum} </p>
  </form>;
}

https://www.sololearn.com/learning/1097/3381/7655/1

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