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Catalog Client Script: how to determine if loaded in Service Portal or Platform UI?

Basic principle is to use the URL via top.location which will be different in service portal:


function onLoad() {
    //shared functions for form load
    var urlString=top.location.toString();
    var bPortal=false; //--loaded from Service Portal?
    if(urlString.indexOf('rp?id=sc_cat_item&sys_id=')>-1){
        bPortal=true;
    }
   
    //--set hidden field--store sys id for ref qualifiers (referenced in script include MAB_refqual_functions)
    //--Cat item id:
    var itemID='';
    try{
        if (bPortal){
            itemID= g_form.getSysId(); //--service portal friendly
        }else{
            //--standard servicenow form
            itemID= gel('sysparm_id').value;
        }
    }catch (ex){
         //--
        alert('An error has occurred in the form load ' + ex.toString());
    }
    g_form.setValue('hidden_catitem_sysid',itemID );
    //alert(g_form.getValue('hidden_catitem_sysid'));
}

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