String to Float Conversion in JavaScript

JavaScriptFloats are decimal numbers.  Similar to previous tutorial, if a float number is inside a quotation marks, it is treated as string by JavaScript.  To convert a string to float, we make use of parseFloat() function.  Example is given below.

<html>
<head>
<title>JavaScript Tutorial </title>
</head>
<body>
<script type="text/javascript">
 
var f1 = "1.35";
var f2 = "2.55";
 
var total = f1+f2;
var sum = parseFloat(f1) + parseFloat(f2);
 
//Total = 1.352.55
alert(total);
 
//Sum = 3.9
alert(sum);
 
</script>
</body>
</html>

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