Get order guide sys id in the catalog item client script--how to tell in catalog item scripts if part of an order guide or standalone

How to tell in catalog item scripts if part of an order guide or standalone

below does not work in service portal

alert(gel('sysparm_guide').value);


top.location will be nav_to.do?uri=%2Fcom.glideapp.servicecatalog_cat_item_guide_view.do%3Fsysparm_guide%3D7d292af7371c57008ca1138943990e7d%26sysparm_active%3D5ec78e0237a0db008ca1138943990e63

for service portal

top.location will be https://<instance url>/sp?id=sc_cat_item_guide&sys_id=7d292af7371c57008ca1138943990e7d

var res_orderguide=getP();

if (res_orderguide ){

        //--form is part of order guide

        g_form.setReadOnly('line_manager', true);

        g_form.setReadOnly('requested_for', true);

        g_form.setReadOnly('job_title', true);

       

    }

function getP(){

    var isPartOfGuide=false;

    try{

        var urlString=top.location.toString();

        //return urlString;

        if(urlString.indexOf('sc_cat_item_guide')>-1){

            //--service portal view

            isPartOfGuide=true;

        }

        if(urlString.indexOf('sysparm_guide')>-1){

            //--standard servicenow view

            isPartOfGuide=true;

        }

       

        alert(getPVal('sc_cat_item_guide'));//--to get order guide ID--portal friendly

        alert(getPVal('sysparm_guide'));//--to get order guide ID--non portal friendly

    }catch (ex){

        //alert('err');

    }

    return (isPartOfGuide);

}

function getPVal (name){

    var parms = decodeURI(location.search).split("&").map(makeParmObjList);

    if(parms){

        parms.forEach(function(item){

            //alert(item.field);

            //alert(item.value);

        });

    }

   

    function makeParmObjList(item){

        var keyPair = item.split('=');

        return {field: keyPair[0], value: keyPair[1]};

        }

        //--courtesy of

        //--https://community.servicenow.com/community?id=community_blog&sys_id=ec3eea6ddbd0dbc01dcaf3231f9619d6&view_source=searchResult

        //--https://www.servicenowguru.com/scripting/client-scripts-scripting/parse-url-parameters-client-script/

    }
}

//https://community.servicenow.com/community/develop/blog/2016/11/04/adventures-in-service-portaling-populate-catalog-variable-values-through-the-url

//https://www.servicenowguru.com/scripting/client-scripts-scripting/parse-url-parameters-client-script/