<!DOCTYPE html>
<html>
<body>
<h1>JavaScript String</h1>
<h2>The concat() Method</h2>
<p>The concat() method joins two or more strings:</p>
<p id="demo"></p>
<script>
let text1 = "Hello";
let text2 = "World!";
let text3 = text1.concat(" ",text2);
document.getElementById("demo").innerHTML = text3;
</script>
</body>
</html>