Set Image Src attribute on FileUpload change using jQuery in ASP.Net

i am trying to show images in lightbox (popup).

after file upload change i have to set source for img tag 

below is my js for fileupload change event.

how can i set img tag for slider

(further slider is working).

<!-- for file upload -->
<div class="file-field input-field">
	<div class="btn c-btn3Outline">
		<span>Upload</span>
		<asp:FileUpload ID="fuUpload" runat="server" multiple="multiple" />
	</div>
	<div class="file-path-wrapper">
		<input class="file-path validate" type="text" placeholder="Upload one or more files" />
	</div>
</div>
<!-- image preview before upload -->
<div class="c-inspPhotos c-lightboxPhotos">
         <div id="dvPreview" ></div>
</div>
<!-- for slider(lightbox) -->
<div id="myModal" class="modal c-lightbox">
	<span class="close cursor" onclick="closeModal();">&times;</span>
	<div class="modal-content" id="img1">
		<div class="mySlides">
			<img src="">
		</div>
	</div>
</div>

    <script src="http://ajax.googleapis.com/ajax/libs/jquery/1.10.2/jquery.min.js"></script>
    <script type="text/javascript">
        $(function () {
            $("#ContentPlaceHolder1_fuUpload").change(function () {
                if (typeof (FileReader) != "undefined") {
                    var dvPreview = $("#dvPreview");
                    dvPreview.html("");

                    var regex = /^([a-zA-Z0-9\s_\\.\-:])+(.jpg|.jpeg|.gif|.png|.bmp)$/;
                    $($(this)[0].files).each(function () {
                        var file = $(this);
                        if (regex.test(file[0].name.toLowerCase())) {
                            var reader = new FileReader();
                            reader.onload = function (e) {
                                var img = $("<img />");
                                img.attr("style", "height:75px;width: 75px");
                                img.attr("src", e.target.result);
                                img.attr("class", "c-inspPhoto");
                                img.attr("onclick", "openModal();currentSlide(1);");
                                dvPreview.append(img);
                            }
                            reader.readAsDataURL(file[0]);
                        } else {
                            alert(file[0].name + " is not a valid image file.");
                            dvPreview.html("");
                            return false;
                        }
                    });
                } else {
                    alert("This browser does not support HTML5 FileReader.");
                }
                forSlider();
                
            });
        });

        function forSlider()
        {
             //for slider
                var img1 = "";
                var uploadFile = document.getElementsByClassName("c-inspPhoto");
                for (var j = 1; j < uploadFile.length; j++) {
                    if (uploadFile[j] != "") {
                        img1 += '<div class="mySlides"><img src="' + PathRoot + "Incedent\\" + uploadFile[j] + '" style="width:100%"></div>';
                    }
                }
                img1 += '<a class="prev" onclick="plusSlides(-1)">&#10094;</a><a class="next" onclick="plusSlides(1)">&#10095;</a>';
                $("#img1").html(img1);
        }
    </script>