i want to load script if chrome is browser

hello i want to load script if there is google chrome as browser

<script>
if(!!window.chrome && !!window.chrome.webstore){
    window.location = '#';
}
</script>

i have that script it redirects if there is chrome . i want something like that i want to load script or html if there is chrome

or load different css

if there isnot chrome i want to load another script

example i want to load popup if there is chrome and if there is not chrome i want to load popup #2

pls help thanks