Which specific type should be utilized for the onchange event in checkboxes?

Which type should be used for checkbox event onchange when implementing pure javascript with typescript?

const checkbox = document.querySelector("#myCheckbox") as HTMLInputElement;

function handleCheckboxChange(event: ChangeEvent<HTMLInputElement>) {
    if (event.target.checked) {
        console.log("Checkbox is checked");
    } else {
        console.log("Checkbox is not checked");
    }
}

checkbox.onchange = handleCheckboxChange;

The above approach results in the following error message

type ChangeEvent = /*unresolved*/ any
Cannot find name 'ChangeEvent'.

Answer №1

To ensure proper functionality, make sure to import the interface from react in your file, for example:

import { ChangeEvent } from "react";

Alternatively, you can use the namespace React.ChangeEvent like so:

function handleCheckboxChange(event: React.ChangeEvent<HTMLInputElement>) {
    if (event.target.checked) {
        console.log("Checkbox is checked");
    } else {
        console.log("Checkbox is not checked");
    }
}

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