Let’s write a script that checks the number entered by the user for a match.
The message to enter must be Enter number, initial value is 100
If the user did not enter a number, you need to show the alert modal with the text: Not a number.
If you entered a number, we check for pairing. If it is even, we show a modal window with the text Even, otherwise - Odd.
Use the internal script.

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<!DOCTYPE html>
    <title>Modals practice</title>
    <h2 style="text-align: center;">Open console</h2>