Receiving NaN response

[Branson, GaBriella C]

I have a field where I am trying to infer a decimal value using the following:

 

let fNode = wfschema.asAnalysisPosition(focusNode)

let media = fNode.media

let sum_media = media?.reduce((cur, val) => cur + val.mediaDevelopmentHours, 0)

let perfSupp = fNode.performanceSupportMaterials

let sum_perfSupp = perfSupp?.reduce((cur, val) => cur + val.developmentHours, 0)

let estTime = fNode.estimatedTimeToCompletion

if(media && media.length > 0 && perfSupp && perfSupp.length > 0 && estTime) (sum_media + sum_perfSupp) * estTime

 

It is returning an NaN and I cannot figure out why. I have verified that each of the properties it is looking at has a decimal datatype. How else should I troubleshoot?

 

Please let me know if additional information is required. Thanks!

 

GaBriella Branson

Interagency Wildland Fire Data Management – Knowledge Manager

U.S. Department of the Interior, Office of Wildland Fire 

Mobile: 907-483-0330 | gabriell...@ios.doi.gov

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[Richard Cyganiak]

Hi GaBriella,

One way to debug is to add console.log after each assignment:

let fNode = ...

console.log(fNode)

let media = ...

console.log(media)

And then have the Script Console panel open. Whenever console.log is executed in an ADS script, the argument is added to the output in the script console.

In JavaScript, NaN means “not a number” and is often the result of doing maths with a value that is not a number (such as a string, or an undefined value, or an array). I remember bumping into NaN when I thought I had accessed a single-value property, but it was actually multi-valued, returning an array-like value.

Richard

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[Holger Knublauch]

Yes, and if you are in TopBraid Studio, you have a full Script Debugger panel at your disposal, allowing you to step through each line of code and checking what the values of the variables really are.

As Richard says, maybe some of still returned as objects (such as LiteralNode) instead of JS numbers.

Holger

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[Branson, GaBriella C]

Thank you, Holger and Richard!

 

From: topbrai...@googlegroups.com <topbrai...@googlegroups.com> On Behalf Of Holger Knublauch
Sent: Friday, November 22, 2024 1:49 AM
To: 'Luis Enrique Ramos García' via TopBraid Suite Users <topbrai...@googlegroups.com>
Subject: [EXTERNAL] Re: [topbraid-users] Receiving NaN response

 

 

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