addEmail = () => {
    impForm = document.createElement("input");
    impForm.className = "form-input";
    impForm.type = "email";
    impForm.placeholder = "nom@exemple.com";
    impForm.name = "invites";
    impForm.defaultValue = "{values.invites}";
    // Left this one alone, since you seem to need to use a string with it:
    impForm.setAttribute("onChange", "{handleChange('invites')}");
};