What's the difference between value and valueAsNumber?
const input = document.querySelector('input[type="number"]');
input.addEventListener('input', e => {
const value = e.target.valueAsNumber;
if (isNaN(value)) {
e.target.value = '';
}
});
value and valueAsNumber serve different purposes for number inputs: 1) value always returns a string, even for number inputs, 2) valueAsNumber returns the actual number or NaN if invalid, 3) valueAsNumber handles unit conversions for date/time inputs automatically, 4) Using valueAsNumber eliminates the need for manual parsing with parseInt/parseFloat, 5) This is particularly useful for mathematical operations or validation requiring numeric comparisons.