Is the shiftkey held down in JavaScript

Question

I have written a JS function that only allow numbers to be entered. A copy of that function is below:

function NumbersOnly(e) {
    var evt = e || window.eve         


        

Answer 1

Use event.key instead of charCode. No more magic numbers!

function onEvent(event) {
    const key = event.key; // "a", "1", "Shift", etc.
    if (isFinite(key)) { // Is number
        // Do work
    }
};

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