Редактирование кода:
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<!DOCTYPE html> <html> <body> <p>Click "Try it" to call a function with arguments</p> <button onclick="myFunction('Harry Potter','Wizard')">Try it</button> <p id="demo"></p> <script> function myFunction(name,job) { document.getElementById("demo").innerHTML = "Welcome " + name + ", the " + job + "."; } </script> </body> </html>