form submit

<form id="multiple_upload_lampiran"
        method="post"
        name="multiple_upload_lampiran"
        action="lampiran_upload.php" enctype="multipart/form-data">
            <input type="hidden" name="image_lampiran_submit" value="1"/>
            <div class="row">
                <input type="file" id="lampiran-images" class="lampiran_file" name="lampiran[]" multiple>
            </div>
            <div class="row">
                <div class="input-field col s4">
                    <div class="lampiran-gallery" id="lampiran-preview"></div>

                </div>
            </div>
            <input type="submit" id="submit-lampiran" class="btn green right" name="edit"
            value="Simpan" /> <-- this button can't be clicked
           <a class="btn orange waves-effect waves-light" href="?page=nilai">Back</a>
</form>

// jQuery Form only for image preview
$('#lampiran-images').on('change',function() {
            $('#multiple_upload_lampiran').ajaxForm({
                target: "#lampiran-preview",
                beforeSubmit:function(e) {
                    //
                },
                success:function(e) {
                    //
                },
                error:function(e) {
                    //
                }
            }).submit()
        })