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<!DOCTYPE html> <html> <body> <h1>Demo: Class in JavaScript</h1> <p id="p1"></p> <script> function Person() { this.firstName = "unknown"; this.lastName = "unknown"; } var person1 = new Person(); person1.firstName = "Steve"; person1.lastName = "Jobs"; alert(person1.firstName + " " + person1.lastName); var person2 = new Person(); person2.firstName = "Bill"; person2.lastName = "Gates"; alert(person2.firstName + " " + person2.lastName ); </script> </body> </html>
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