Print result of JavaScript function

I have the following function what it does is take information from a printer, code supplied by its manufacturer, the issue is that I need to print "SerialNumber", "hostName", "productNumber", "firmwareVersion", they tell me that by Onclick function, but I can not do it, so I ask for your help if someone can help me thanks. main.js

function getManufacturerInfo()
{
var dfd = new $.Deferred();
oxpddiscovery.GetOXPdDiscoveryTree()
    .then(function(discoveryTree)
    {
        try
        { 
            oxpddeviceinfo.Setup(discoveryTree);
            oxpddeviceinfo.GetManufacturerInfo()
                .then(function(deviceinfo)
                {
                    try
                    {
                        oxpddeviceinfo.GetManufacturerInfo();
                        dfd.resolve(); 
                        document.getElementById("SerialNumber").innerHTML = deviceinfo.deviceSerialNumber;
                        document.getElementById("hostName").innerHTML = deviceinfo.hostName;
                        document.getElementById("firmwareVersion").innerHTML = deviceinfo.firmwareVersion;
                        document.getElementById("productNumber").innerHTML = deviceinfo.productNumber;

                    }
                    window.onload=
                    catch(err)
                    {
                        console.log('ManufacturerInfo: ' + 'err.name="' + err.name + '", ' + 'err.message="' + err.message);
                        dfd.reject(err);
                    }
                }
                ); 
        }
        catch(err)
        {
            console.log('DiscoveryTree: ' + 'err.name="' + err.name + '", ' + 'err.message="' + err.message);
            dfd.reject(err);
        }
    } 
    );
return dfd.promise();  
};