<!DOCTYPE html>
<html lang="en-US">
<body>
<p dir="ltr">Click on the button to toggle the directionality of this paragraph.</p>
<button onclick="myFunction()">Toggle Button</button>
<p id="point"></p>
<script>
var elem = document.getElementsByTagName("p")[0];
function myFunction(){
if(elem.dir == "ltr")
elem.dir = "rtl";
else
elem.dir = "ltr";
}
</script> </body>
</html>