JavaScript getElementById returns NaN getelementbyid returns null,getelementbyid returns undefined,getelementbyid returns null react,

Consider the following example snippet of my code. I have tried parseInt with no luck. Here, I want javascript to set a number in a cell PICweight then retrieve it later and place it in a different cell totalcabin. You can see here, I want to set the number as 1, but when the code runs, it returns NaN in totalcabin.

<td id="PICweight" type="tel"></td>
<script>
    window.onchange = function setfields() {

        document.getElementById("PICweight").innerHTML = 1;
        var PICweight = document.getElementById("PICweight").value;

        var totalcabin = document.getElementById("totalcabin");
        totalcabin.innerHTML = +PICweight
    }
</script>
Answer:1

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