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<!DOCTYPE html> <html> <body> <h2>JavaScript Array Methods</h2> <h2>concat()</h2> <p>The concat() method merges (concatenates) arrays:</p> <p id="demo"></p> <script> const myGirls = ["Cecilie", "Lone"]; const myBoys = ["Emil", "Tobias", "Linus"]; const myChildren = myGirls.concat(myBoys); document.getElementById("demo").innerHTML = myChildren; </script> </body> </html>