check undefined

[deepika46]

Hello experts,

Is there any way we can check undefined in servicenow using a gs function?

I am new to SNOW Scripting.

[Harsh_Deep]

Hello @deepika46 

You can use current.field_name==undefined   OR

if(gr2.variables.server_name != undefined){

If this will not resolve your query then

Can you please explain your query ?

[deepika46]

hi harsh,

i am using "var rc = cart.placeOrder();". In some cases rc , it is not creating a request i.e not genrating a sys id of the request and generating undefined or null . Is there any way i can check that? So only if it returns a sys id then only it should go and execute further lines of code, else it should stop if rc returns undefined or null or even empty

[Harsh_Deep]

Hello @deepika46 

You can use 

1. if(rc==undefined || rc==null)

Please accept the solution and mark as helpful, if it helps you.

[Tai Vu]

Hi @deepika46 

Let's try this.

//nil(o: Object): boolean
gs.nil(<variable>); //Queries an object and returns true if the object is null, undefined, or contains an empty string

Also this one

JSUtil.nil()

JSUtil.nil(<variable>);

Let me know if it works for you.

Cheers,

Tai Vu