Try it Editor: JavaScript Array Methods concat()

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<!DOCTYPE html>
<html>
<body>

<h2>JavaScript Array Methods</h2>

<h2>concat()</h2>

<p>The concat() method is used to merge (concatenate) arrays:</p>

<p id="demo"></p>

<script>
var myGirls = ["Cecilie", "Lone"];
var myBoys = ["Emil", "Tobias", "Linus"];
var myChildren = myGirls.concat(myBoys);

document.getElementById("demo").innerHTML = myChildren;
</script>

</body>
</html>

Result :