Lieber Matthias,
Pseudocode:
document.addEventListener("change", function (event) {
let targetInput = event.target || event.srcElement;
document.querySelectorAll("input").forEach(function (input) {
if (input != targetInput) {
input.value = umgerechneterWertAus(targetInput);
}
});
});
Liebe Grüße
Felix Riesterer