What is best way to get Server-Side information on a Catalog Client script

[Ashish Kathait]

I have a Catalog Client Script which need to pull information from a Server-side table, and I have two ways to do that one is through Script include call and second is call back function.

What would one to use and which is better.

Call back function example - 

var ga = new GlideAjax('MyScriptInclude');
ga.addParam('sysparm_name', 'getDetails');
ga.addParam('sysparm_user_id', userId);
ga.getXMLAnswer(function(response) {
var data = JSON.parse(response);
g_form.setValue('my_field', data.some_value);
});

[palanikumar]

Hi,

Do you mean option between call back and without call back function?

My recommendation is to use call back function as Service Portal supports only the GlideAjax with call back function

[pavani_paluri]

Hi @Ashish Kathait,

Please see below table for detailed comparison of both callbacks:

getXMLAnswer	You want a clean, simple value	Easy, reusable
getXML	You want more complex logic or XML parsing	Flexible

Mark it helpful if this helps you to understand. Accept solution if this give you the answer you're looking for
Kind Regards,
Pavani P