AJAX Simple Example

ajax_simple.js

/*
**** Client Script ****
Name: CM Ajax Test
Table: Incident [incident]
UI Type: All
Type: On Load
Application: Global
Active, Inherited, Global: True (checked)
*/
//Script
function onLoad() {
  var ga = new GlideAjax('global.GetDepartmentAJAX');//Name of Script Include
	ga.addParam('sysparm_name','grpNameAvail');// Must be "sysparm_name". Name of function/method in the Script Include to call
	ga.addParam('sysparm_one','foo'); //Paramete to pass. Must star with "sysparm_"
	ga.addParam('sysparm_two','bar'); //Paramete to pass. Must star with "sysparm_"
	ga.addParam('sysparm_sys_user_group', 'chris'); //Paramete to pass. Must star with "sysparm_"
	ga.getXML(processIt); //Do it. "processIt" is the "callback" function below
   
}

function processIt(response){//Callback function
	var answer = response.responseXML.documentElement.getAttribute("answer");//Must use this exact line
	alert(answer);
}


/*
**** Script Include ****
Name: GetDepartmentAJAX
API Name: global.GetDepartmentAJAX
Application: Global
Asccessible from: "All application Scopes" <- IMPORTANT!
Client callable: True (checked) <- IMPORTANT!
Active: True (checked)
*/
//Script
var GetDepartmentAJAX = Class.create();
GetDepartmentAJAX.prototype = Object.extendsObject(AbstractAjaxProcessor, {
    grpNameAvail: function() {
        /*
        arguments: none
        Parameters/Arguments: 
        Are passed via the 'sysparm_xxxx' varables from the Client Script
        Are accessed via this.getParameter("sysparm_xxxx");
        Return true/false
        */
        var group_name = this.getParameter("sysparm_sys_user_group"); //Matches from Client Script above
        //Starndard Script Include stuff...
        var answer = true;
        var grp = new GlideRecord('sys_user_group');
        grp.addEncodedQuery('name=' + group_name);
        grp.query();
        while (grp.next()) {
            answer = false;
        }
	//Don't return an object, Return a String
        return answer;//Whatever you return ends up in the "answer" varable in the client script once the XML is parsed
    },
    type: 'GetDepartmentAJAX'
});