Tryit Editor v2.7

Edit This Code:
<!DOCTYPE html>
<html>
<body>

<p>Click the button to return the string value of the regular expression.</p>

<button onclick="myFunction()">Try it</button>

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

<script>
function myFunction() {
    var patt = new RegExp("Hello World", "g");
    var res = patt.toString();
    document.getElementById("demo").innerHTML = res;
}
</script>

</body>
</html>