<!DOCTYPE html>
<html lang="en-US">
<body onclick="myFunction(event)">
<p>Click anywhere within this paragraph.</p>
<p id="point"></p>
<script>
var x = document.getElementById("point");
var txt = document.getElementsByTagName("p")[0].innerText;
var len = txt.length;
function myFunction(e){
var range = document.caretRangeFromPoint(e.clientX, e.clientY);
var start = txt.substring(range.startOffset, len);
x.innerHTML = "<strong>Range:</strong> " + start;
}
</script> </body>
</html>