<!DOCTYPE html>
<html>
<body>
<p>Click the button to parse different strings.</p>
<button onclick="myFunction()">Try it</button>
<p id="demo"></p>
<script>
function myFunction() {
var a = parseFloat("10") + "<br>";
var b = parseFloat("10.00") + "<br>";
var c = parseFloat("10.33") + "<br>";
var d = parseFloat("34 45 66") + "<br>";
var e = parseFloat(" 60 ") + "<br>";
var f = parseFloat("40 years") + "<br>";
var g = parseFloat("He was 40") + "<br>";
var n = a + b + c + d + e + f + g;
document.getElementById("demo").innerHTML = n;
}
</script>
</body>
</html>