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<!DOCTYPE html> <html> <head> <title>My title</title> </head> <body> <p>Click the button to change the title of the document.</p> <button onclick="myFunction()">Try it</button> <p id="demo"></p> <script> function myFunction() { document.title = "Some new title text"; document.getElementById("demo").innerHTML = "The title of the document was changed from 'My title' to 'some new title text'. View Source to see the effect."; } </script> </body> </html>