onchange client script for a list collector

[RudhraKAM]

I have a requirement on catalog item , on the change of a variable, a list collector will show up and we need to filter the values in the list collector (active=true) , i know we can achieve this  by defining the ref qual condition in the list collector but we have another use case . so can some one please help me with the code ?

Thanks in advance 

[Mike Patel]

try below script it should work on portal. Make sure to change UI type to All on client script.

https://www.servicenowguru.com/scripting/client-scripts-scripting/changing-filter-list-collector-variable-client-script/

function onLoad() {
    //Apply a default filter to the list collector variable
    var collectorName = 'configuration_items';
    var filterString = 'name!=NULL^sys_class_nameANYTHING';
    
    //Try Service Portal method
    try{
        var myListCollector = g_list.get(collectorName);
        myListCollector.reset();
        myListCollector.setQuery(filterString);
    }
    //Revert to Service Catalog method
    catch(e){
        //Hide the list collector until we've set the filter
        g_form.setDisplay(collectorName, false);
        setCollectorFilter();
    }
    
    function setCollectorFilter(){
        //Test if the g_filter property is defined on our list collector.
        //If it hasn't rendered yet, wait 100ms and try again.
        if(typeof(window[collectorName + 'g_filter']) == 'undefined'){
            setTimeout(setCollectorFilter, 100);
            return;
        }
        //Find and hide the filter elements (optional)
        //Simple method for items with only one list collector
        //$('ep').select('.row')[0].hide();
        //Advanced method for items with more than one list collector (more prone to upgrade failure)
        //var el = $('container_' + g_form.getControl(collectorName).id).select('div.row')[0].hide();
        
        //Reset the filter query
        window[collectorName + 'g_filter'].reset();
        window[collectorName + 'g_filter'].setQuery(filterString);
        window[collectorName + 'acRequest'](null);
        //Redisplay the list collector variable
        g_form.setDisplay(collectorName, true);
    }
}

[Mike Patel]

for onchange you might have to modify below script to something like

 //Apply a default filter to the list collector variable
    var collectorName = 'configuration_items';
    var filterString = 'name!=NULL^sys_class_nameANYTHING';
    
        var myListCollector = g_list.get(collectorName);
        myListCollector.reset();
        myListCollector.setQuery(filterString);

[RudhraKAM]

tried both but none worked 

[Mike Patel]

Can you provide your script?

[RudhraKAM]