How to test a piece of javascript quickly?

[Lei Wang3]

How to test a piece of javascript quickly? 

Do you have to test it in client ui policy or business rule? fix script? which is quick and convenient? for example, to query GlideRecord?

[Mike_R · Accepted solution]

Javascript Executor is only for client-side code, and you shouldn't use GlideRecord in client-side code.

If you are just trying to test the js executor, try this simple line

alert("Hello from the Javascript Executor");

To learn more about scripting, I highly recommend this

https://developer.servicenow.com/dev.do#!/learn/courses/tokyo/app_store_learnv2_scripting_tokyo_scri...

and 

https://www.youtube.com/watch?v=62Nabpb94Jw

[Lei Wang3]

I may not be able to remember this shortkey. Is there a way to open the executor in menu item?

[Mike_R]

Unfortunately no