[thelist] JavaScript : How to determine if float or integer

[Syed Zeeshan Haider]

From: "Markus Staas"
To: <thelist at lists.evolt.org>
Sent: January 28, 2003, Tuesday 4:00 PM
Subject: [thelist] JavaScript : How to determine if float or integer


> Do you know any other way than scanning for the point in the whole
> variable?

Use indexOf() method.

E.g.

<script language="JavaScript">

var numbContainer
var whatType
var notNumber

numbContainer=3.141                 // assigning a number to the variable

notNumber="a"+numbContainer   // this step will convert the number
                                                    // into string without
effecting the original number

whatType=notNumber.indexOf(".")

alert(whatType)    // a posititive integer (2) is returned whcih tells the
                            // position of point in the number

numbContainer=786             // assigning another number to the variable

notNumber="a"+numbContainer   // this step will convert the number
                                                   // into string without
effecting the original number

whatType=notNumber.indexOf(".")

alert(whatType)    // as point will not be found therefore -1 will be returned

</script>

Hope this helps!

Syed Zeeshan Haider.
http://syedzeeshanhaider.faithweb.com/