xxxxxxxxxx<html lang="en"><head> <meta charset="utf-8"> <title>JavaScript Parse Floating Point Numbers from Strings</title></head><body> <script> document.write(parseFloat("3.14") + "<br>"); // 3.14 document.write(parseFloat("50px") + "<br>"); // 50 document.write(parseFloat("1.6em") + "<br>"); // 1.6 document.write(parseFloat("124.5 lbs") + "<br>"); // 124.5 document.write(parseFloat("weight 124.5 lbs") + "<br>"); // NaN document.write(parseFloat("6.5 acres")); // 6.5 </script></body></html>