<!DOCTYPE html>
<html lang="en-US">
<body>
<p>The exec() method returns the matched text if it finds a match, otherwise it returns null.</p>
<button onclick="myFunction()">Click me</button>
<p id="point"></p>
<script>
function myFunction(){
var str = "Pot I got is hot";
// Try to change "o" to "z"
var pattern = new RegExp("o");
var result = pattern.exec(str);
document.getElementById("point").innerHTML = result;
}
</script> </body>
</html>