File API get input value

fileAPI.js

$(document).on('change','#imageUpload',function(e){
	var input = e.target;
	var file = input.files[0];

	var reader = new FileReader();
	var dataURL = reader.readAsDataURL(file);
	reader.onload = function(){
        var src = reader.result;
        $("#uImagePrev").css({"background-image":"url("+src+")"});
        }
})