Редактирование кода:
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<!DOCTYPE html> <html> <body> <p>Click the button to join the array elements into a string.</p> <button onclick="myFunction()">Try it</button> <p id="demo"></p> <script> function myFunction() { var fruits = ["Banana", "Orange", "Apple", "Mango"]; var x = document.getElementById("demo"); x.innerHTML = fruits.join(); } </script> </body> </html>