Javascript parseFloat Function

As its name indicates, Javascript parseFloat function is used to convert string value to a corresponding floating point number.

Javascript parseFloat function accept string parameter and return corresponding floating point number.

Syntax

var obj1=new String("7893");
document.write(parseFloat(obj1));
var obj2=new Boolean(0);
document.write(parseFloat(obj2));

Javascript parseFloat Function Example

<!DOCTYPE html>
<html>  
<head>  <!-- www.techstrikers.com -->
<title>My first Javascript code</title>   
</head>  
<body bgcolor="#bnde45">
<fieldset>
<legend>Javascript parseFloat Function</legend>
<script> 

var obj1=new String("7893.23");  
document.write(parseFloat(obj1));  
document.write("</br>");    

var obj1=new String("Value is 233");  
document.write(parseFloat(obj1));  
document.write("</br>");

var obj2=new String("NaN");  
document.write(parseFloat(obj2));  
document.write("</br>");  
  
var obj3=new String(" 903  21");  
document.write(parseFloat(obj3));  
document.write("</br>");    
  
var obj4=new Date();  
document.write(parseFloat(obj4));  
document.write("</br>");  

</script>
</fieldset>
</body>  
</html>

See Live Example

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