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<h1>Η πρώτη μου ιστοσελίδα</h1>
Ενεργοποιήστε τον debugger πατώντας F12 (Chrome, IE, Firefox) και επιλέξτε "Console" απο το μενού.
Με τον debugger ενεργοποιημένο, σταματά η εκτέλεση του κώδικα στην λέξη 'debugger'.
<p id="test1"></p>
              a = 15;
b = 9;
c = a + b;

var x = 25 * 5;
document.getElementById("test1").innerHTML = x;
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