Problems with JavaScript parseInt and WSH

Question

I'm having trouble with a Windows Scripting Host script.

Here is an example of problem input code:

WScript.Echo(typeof(parseInt('woot')))
WScript.Echo(parseInt('woot'))

The output is:

number
1.#QNAN

Shouldn't 'woot' be evaluating as a string? How can I get around this limitation?

score 0 · Answer 1 · answered Nov 07 '13 at 01:41

0

Anything from parseInt is a number, since even NaN is treated a number by JS.Therefore, you'd need to check the type of 'woot' before you parseInt it.

answered Nov 07 '13 at 01:41

lincb

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adam187 · Answer 2 · 2013-11-07T01:52:40.233

0

You can check if parseInt return NaN (not a number)

isNaN(parseInt('woot', 10))

typeof return number becouse NaN is number in JavaScript

But remember that isNaN is litle bit broken read more#Examples

edited Nov 07 '13 at 01:52

answered Nov 07 '13 at 01:46

adam187

3,193
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score 0 · Accepted Answer · edited May 23 '17 at 12:13

0

I found a solution here:

Validate decimal numbers in JavaScript - IsNumeric()

Can a mod please close this request?

edited May 23 '17 at 12:13

Community

1
1

answered Nov 07 '13 at 01:56

posfan12

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Problems with JavaScript parseInt and WSH

3 Answers3