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<!DOCTYPE html> <html> <body> <h1>JavaScript Operators</h1> <h2>The typeof Operator</h2> <p>Variables can be emptied if you set the value to <b>undefined</b>.</p> <p id="demo"></p> <script> let car = "Volvo"; car = undefined; document.getElementById("demo").innerHTML = car + "<br>" + typeof car; </script> </body> </html>
