Type Conversion, float to integer, string to integer - Javascript (JS) Tutorial

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Type Conversion

Topic

Converting a string data type to integer?
How to convert a float to integer in javascript?

Explanation

Data Type Conversion:
The following data type conversions are possible
a) String to Integer (int)
b) Float to Integer (int)
c) String to Float
d) Integer (int) to String
e) Float to String

a) Converting String to Integer
To convert a value from string to integer we have to use the function or method "parseInt(). Passing a correct argument to the function (e.g: "4") will return correct value else (e.g: "sd") 0 will be returned.

Example	Result
parseInt("4");	4
parseInt("5aaa");	5
parseInt("4.33333");	4
parseInt("aaa");	NaN (means "Not a Number")

b) Converting Float to Integer
To convert a float value in to integer we have to use the function or method parseInt.

Example	Result
parseInt(5.133);	5

Example Code:
<script language="javascript">
var a = "334";
var b = 3;
var c = parseInt(a)+b;
var d = a+b;
document.write("parseInt(a)+b = "+c);
document.write(" a+b = "+d);
</script>

Result:

A Note

Javascript (JS) is one of the most used languages in the world. Some times spelled as Java Script. Hope you enjoy this tutorial. Do send your feedback or suggestions on this javascript or java script tutorial. This is a copyright content.

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