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Client scripts or UI Policies throws error ReferenceError: HelloWorld is not defined when tring to call a Script Include - Support and Troubleshooting
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KB0752241

Client scripts or UI Policies throws error ReferenceError: HelloWorld is not defined when tring to call a Script Include


1552 Views Last updated : Jan 28, 2024 public Copy Permalink
KB Summary by Now Assist

Issue

Symptoms

Cannot instantiate a Script Include object from a client script.  Error in console displays something like:

ReferenceError: HelloWorld is not defined

Where HelloWorld is the name of the Script Include

On the Client Script or UI Policy, we may have something like

var obj = new HelloWorld();

Release

All

Cause

The problem is the way client code is being prepared to call the Script Include

var obj = new HelloWorld()

is not the correct way to instantiate a Script Include object

 

Resolution

The correct way to call a Script Include from a Client Script, or other client side code like UI Policies, is to use a GlideAjax object like so:

var ga = new GlideAjax("HelloWorld")

Additional Information

https://docs.servicenow.com/csh?topicname=c_GlideAjaxAPI.html&version=latest


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