how to create links for all files in directory with javascript? [duplicate]

I have such list but with lists all contents in a directory but I want to create a link to also if you click into the file it'll read the file if it's a directory then it'll go into the directory..

e.g. the list is
a (folder)
b (folder)
c (folder)
d (folder)
e (folder)
f (folder)
asdf.txt
asdf.html
asdf.ini

and if I clic on folder a then it'll go into the a directory if I click on asdf.txt then it'll show what's in the txt.

I have the following code to create all the contents but not sure how to implement links into all directories and files

for(var I in entries)
{
    // creates li and /li
    var li = document.createElement('li');
    // creates the name of the contents
    li.appendChild(document.createTextNode(entries[I].name));
    ul.appendChild(li);
}

Thanks in advance.

Edit: This is actually what I tried but didn't work so I just delete it and posted my original.....guess I should post this too

    var ul = document.getElementById('contentList');
    // for all the entries inside the directory loop the following
    for(var I in entries)
    {
        // creates li and /li
        var li = document.createElement('li');
        var a = document.createElement('a');
        // creates the name of the contents

        ul.appendChild(li);
        li.appendChild(a);
        a.appendChild(document.createTextNode(entries[I].name));
        a.href = (entries[I].name);
        li.appendChild(a);
        ul.appendChild(li);