Can't edit input value in React

I work on a project in React and I have an input in a table for quantity of a product I want to buy and I can’t change the value on the web page.

If I delete value property, I can modify the value and I think I type something wrong. Cand somebody help me how to type that value property to be 1?

                       <input
                          type="text"
                          id={"cantitate_" + index}
                          value={1}
                          onChange={(e) => changeQuantity(e.target.value, index)}
                        />

changeQuantity is a function where I try to calculate something.

>Solution :

You should be using defaultValue instead of value, since I assume from the comment that you are not implementing a controlled form:

  <input
    type="text"
    id={"cantitate_" + index}
    defaultValue={1}
    onChange={(e) => changeQuantity(e.target.value, index)}
  />