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<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <title>JavaScript constructor function add method</title> </head> <body> <pre> <!-- Use pre element for work document.writeln() method --> <script type="text/javascript"> var Foo = function Foo(name) { this.name = name; this.position = function() { document.writeln("Hi, I'm " + this.name + ", My discipline is Sales Account Manager."); } } var foo = new Foo("Opal Kole"); foo.position(); Foo.prototype.rename = function(name) { this.name = name; } foo.rename("Max Miller"); foo.position(); </script> </pre> </body> </html>
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