AJAX call example 2: return single value

AJAX call example 2: return single value

Client script code:

//--author: RDS Feb 2018

function onChange(control, oldValue, newValue, isLoading) {

    if (isLoading || newValue == '') {

        // return;

    }

    var ga=new GlideAjax('fj_servicerequest_ajax');

    ga.addParam('sysparm_name', 'refreshItemDescription');

    ga.addParam('sysparm_req_type', newValue);

    ga.addParam('sysparm_req_category', g_form.getValue('fj_request_category'));

    ga.addParam('sysparm_req_subcategory',           g_form.getValue('fj_request_subcategory'));

     ga.getXMLAnswer(function(answer) {

         //alert('AJAX return:' + answer);

         g_form.setValue('fj_request_shortdescription',answer);

     });

    }

}

Script include script (client callable):

var my_ajax_funcs_sc = Class.create();

my_ajax_funcs_sc.prototype = Object.extendsObject(AbstractAjaxProcessor, {

   

    refreshItemDescription: function (){

        var sreturn='';

       

        var sDescr='';

        var sChrg='No';

        var grFJReq=new GlideRecord('u_fujitsu_request_types');

        grFJReq.addQuery('u_request_type', this.getParameter('sysparm_req_type'));

        grFJReq.addQuery('u_request_category', this.getParameter('sysparm_req_category'));

        grFJReq.addQuery('u_request_subcategory', this.getParameter('sysparm_req_subcategory'));

        grFJReq.query();

        if (grFJReq.next()){

            sreturn=grFJReq.u_request_short_description;

            

        }

        return (sreturn);

    },

    type: 'my_ajax_funcs_sc'

});