<!DOCTYPE html>
<html>
<body>
<p>The multiline property returns true if the "m" modifier is set, otherwise it returns false.</p>
<p>Click the button to check whether or not the "m" modifier is set.</p>
<button onclick="myFunction()">Try it</button>
<p id="demo"></p>
<script>
function myFunction() {
var str = "Visit W3Schools!";
var patt1 = /W3S/gi;
var res = patt1.multiline;
document.getElementById("demo").innerHTML = res;
}
</script>
</body>
</html>