Remove JS class dynamically javascript

function removejscssfile(filename, filetype){
    var targetelement=(filetype=="js")? "script" : (filetype=="css")? "link" : "none";
//determine element type to create nodelist from
    var targetattr=(filetype=="js")? "src" : (filetype=="css")? "href" : "none";
//determine corresponding attribute to test for
    var allsuspects=document.getElementsByTagName(targetelement);
    for (var i=allsuspects.length; i>=0; i--){
//search backwards within nodelist for matching elements to remove
    if (allsuspects[i] && allsuspects[i].getAttribute(targetattr)!=null && allsuspects[i].getAttribute(targetattr).indexOf(filename)!=-1)
        allsuspects[i].parentNode.removeChild(allsuspects[i]) //remove element by calling parentNode.removeChild()
    }


 removejscssfile("braintree.js", "js");