try this way
HTML CODE:
<div id='fileNames'> </div>
JQUERY CODE:
var fileExt = {},
fileExt[0]=".png",
fileExt[1]=".jpg",
fileExt[2]=".gif";
$.ajax({
//This will retrieve the contents of the folder if the folder is configured as 'browsable'
url: '../../Images/Avatar/',
success: function (data) {
$("#fileNames").html('<ul>');
//List all png or jpg or gif file names in the page
$(data).find("a:contains(" + fileExt[0] + "),a:contains(" + fileExt[1] + "),a:contains(" + fileExt[2] + ")").each(function () {
var filename = this.href.replace(window.location.host, "").replace("http:///", "");
$("#fileNames").append( "<li>" + filename + "</li>");
});
$("#fileNames").append('</ul>');
}
});
Basic logic referred from this SO question Here
Happy Coding :)