converting javascript to jquery

converting javascript to jquery

I have this JavaScript functions that I want to convert to jquery but I
can't understand jquery. It uses the document.getElementsByName a lot so I
would like to know how to convert the document.getElementsByName into
jquery.
function getElements(name){
if (document.getElementsByName(name)[0].className == "visible"){
document.getElementsByName(name)[0].className = "hidden";
} else {
if(document.getElementsByClassName('visible')[0] != null){
document.getElementsByClassName('visible')[0].className =
"hidden";
}
document.getElementsByName(name)[0].className = "visible";
}
}