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<!DOCTYPE html> <html> <body> <h2>JavaScript Numbers</h2> <p>Call myMethod() to display a number's half value.:</p> <p id="demo"></p> <script> Number.prototype.myMethod = function() { return this.valueOf() / 2; }; let n = 55; document.getElementById("demo").innerHTML = n.myMethod(); </script> </body> </html>
