ulb.hhu.de

Originalmeldung: Img element with empty alt text must have absent or empty title attribute.

Selector: #c473429 > div > div > div > div:nth-child(1) > div:nth-child(1) > div > a > div:nth-child(4) > div > img

Kontext: <img title="20260813_altes_Buecherregal_Hand_DSC02851_1280x1920.jpg" src="/blochproxy/ulbapps/files/news_2741291076ad89f58b59434.81337802-20260813_altes_buecherregal_hand_dsc028...

Originalmeldung: Anchor element found with a valid href attribute, but no link content has been supplied.

Selector: #socialmedia > li:nth-child(1) > a

Kontext: <a href="https://www.facebook.com/HHU.de/" target="_blank" title=""> <span class="sr-only" lang=...</a>

Originalmeldung: Anchor element found with a valid href attribute, but no link content has been supplied.

Selector: #socialmedia > li:nth-child(2) > a

Kontext: <a href="https://www.linkedin.com/school/heinrich-heine-universitat-dusseldorf/" target="_blank" title=""> <span class="sr-only" lang=...</a>

Originalmeldung: Anchor element found with a valid href attribute, but no link content has been supplied.

Selector: #socialmedia > li:nth-child(3) > a

Kontext: <a href="https://www.youtube.com/channel/UCz78Aka2Ukfo2S5KfXApTiw" target="_blank" title=""> <span class="sr-only" lang=...</a>

Originalmeldung: Anchor element found with a valid href attribute, but no link content has been supplied.

Selector: #socialmedia > li:nth-child(4) > a

Kontext: <a href="https://bsky.app/profile/hhu.de" target="_blank" title=""> <span class="sr-only" lang=...</a>

Originalmeldung: Anchor element found with a valid href attribute, but no link content has been supplied.

Selector: #socialmedia > li:nth-child(5) > a

Kontext: <a href="https://www.instagram.com/hhu_de/" target="_blank" title=""> <span class="sr-only" lang=...</a>

Originalmeldung: Anchor element found with a valid href attribute, but no link content has been supplied.

Selector: #header > div > nav:nth-child(3) > div:nth-child(3) > div:nth-child(1) > a:nth-child(1)

Kontext: <a href="https://www.facebook.com/HHU.de/" target="_blank" title=""> <span class="sr-only" l...</a>

Originalmeldung: Anchor element found with a valid href attribute, but no link content has been supplied.

Selector: #header > div > nav:nth-child(3) > div:nth-child(3) > div:nth-child(1) > a:nth-child(2)

Kontext: <a href="https://www.linkedin.com/school/heinrich-heine-universitat-dusseldorf/" target="_blank" title=""> <span class="sr-only" l...</a>

Originalmeldung: Anchor element found with a valid href attribute, but no link content has been supplied.

Selector: #header > div > nav:nth-child(3) > div:nth-child(3) > div:nth-child(1) > a:nth-child(3)

Kontext: <a href="https://www.youtube.com/channel/UCz78Aka2Ukfo2S5KfXApTiw" target="_blank" title=""> <span class="sr-only" l...</a>

Originalmeldung: Anchor element found with a valid href attribute, but no link content has been supplied.

Selector: #header > div > nav:nth-child(3) > div:nth-child(3) > div:nth-child(1) > a:nth-child(4)

Kontext: <a href="https://bsky.app/profile/hhu.de" target="_blank" title=""> <span class="sr-only" l...</a>

Originalmeldung: Anchor element found with a valid href attribute, but no link content has been supplied.

Selector: #header > div > nav:nth-child(3) > div:nth-child(3) > div:nth-child(1) > a:nth-child(5)

Kontext: <a href="https://www.instagram.com/hhu_de/" target="_blank" title=""> <span class="sr-only" l...</a>

Originalmeldung: Anchor element found with no link content and no name and/or ID attribute.

Selector: #header > div > nav:nth-child(4) > ul > li > div > div > ul > li:nth-child(5) > span > a

Kontext: <a href="" class="nav-link"> <s...</a>

Originalmeldung: Anchor element found with a valid href attribute, but no link content has been supplied.

Selector: #footer > div > div:nth-child(2) > div:nth-child(2) > ul > li:nth-child(1) > a

Kontext: <a href="https://www.facebook.com/HHU.de/" target="_blank" title=""> <span class="sr-only" lang=...</a>

Originalmeldung: Anchor element found with a valid href attribute, but no link content has been supplied.

Selector: #footer > div > div:nth-child(2) > div:nth-child(2) > ul > li:nth-child(2) > a

Kontext: <a href="https://www.linkedin.com/school/heinrich-heine-universitat-dusseldorf/" target="_blank" title=""> <span class="sr-only" lang=...</a>

Originalmeldung: Anchor element found with a valid href attribute, but no link content has been supplied.

Selector: #footer > div > div:nth-child(2) > div:nth-child(2) > ul > li:nth-child(3) > a

Kontext: <a href="https://www.youtube.com/channel/UCz78Aka2Ukfo2S5KfXApTiw" target="_blank" title=""> <span class="sr-only" lang=...</a>

Originalmeldung: Anchor element found with a valid href attribute, but no link content has been supplied.

Selector: #footer > div > div:nth-child(2) > div:nth-child(2) > ul > li:nth-child(4) > a

Kontext: <a href="https://bsky.app/profile/hhu.de" target="_blank" title=""> <span class="sr-only" lang=...</a>

Originalmeldung: Anchor element found with a valid href attribute, but no link content has been supplied.

Selector: #footer > div > div:nth-child(2) > div:nth-child(2) > ul > li:nth-child(5) > a

Kontext: <a href="https://www.instagram.com/hhu_de/" target="_blank" title=""> <span class="sr-only" lang=...</a>

Originalmeldung: This button element does not have a name available to an accessibility API. Valid names are: title , element content, aria-label , aria-labelledby .

Selector: #header > div > div:nth-child(2) > div:nth-child(2) > button

Kontext: <button type="button" class="burger" aria-expanded="false"> <div class="sr-only sr-open...</button>

Originalmeldung: This form does not contain a submit button, which creates issues for those who cannot submit the form using the keyboard. Submit buttons are INPUT elements with type attribute "submit" or "image", or BUTTON elements with type "submit" or omitted/invalid.

Selector: #googlesearch

Kontext: <form id="googlesearch" method="get" action="https://www.hhu.de/suche"> <div> <label for="searc...</form>

Originalmeldung: This textarea element does not have a name available to an accessibility API. Valid names are: label element, title , aria-label , aria-labelledby .

Selector: #a114

Kontext: <textarea id="a114" placeholder="Question" name="form_114" class="lz_form_base lz_form_box lz_form_area" onchange="lz_global_impose_max_length(this, 600);lz_chat_save_input_valu...

Originalmeldung: This form field should be labelled in some way. Use the label element (either with a "for" attribute or wrapped around the form field), or "title", "aria-label" or "aria-labelledby" attributes as appropriate.

Selector: #a114

Kontext: <textarea id="a114" placeholder="Question" name="form_114" class="lz_form_base lz_form_box lz_form_area" onchange="lz_global_impose_max_length(this, 600);lz_chat_save_input_valu...

Originalmeldung: This select element does not have a name available to an accessibility API. Valid names are: label element, title , aria-label , aria-labelledby .

Selector: #lz_form_groups

Kontext: <select id="lz_form_groups" class="lz_form_base lz_form_box lz_form_select" onchange="lz_chat_change_group(this,true);" onkeyup="this.blur();" onclick="lz_chat_pre_change_group(...

Originalmeldung: This form field should be labelled in some way. Use the label element (either with a "for" attribute or wrapped around the form field), or "title", "aria-label" or "aria-labelledby" attributes as appropriate.

Selector: #lz_form_groups

Kontext: <select id="lz_form_groups" class="lz_form_base lz_form_box lz_form_select" onchange="lz_chat_change_group(this,true);" onkeyup="this.blur();" onclick="lz_chat_pre_change_group(...

Originalmeldung: This textarea element does not have a name available to an accessibility API. Valid names are: label element, title , aria-label , aria-labelledby .

Selector: #lz_chat_text

Kontext: <textarea id="lz_chat_text" placeholder="Type a message" onchange="lz_overlay_chat_impose_max_length(this, 600);OverlayChatWidgetV2.UpdateChatInputUI();" onkeydown="lz_overlay_c...

Originalmeldung: This form field should be labelled in some way. Use the label element (either with a "for" attribute or wrapped around the form field), or "title", "aria-label" or "aria-labelledby" attributes as appropriate.

Selector: #lz_chat_text

Kontext: <textarea id="lz_chat_text" placeholder="Type a message" onchange="lz_overlay_chat_impose_max_length(this, 600);OverlayChatWidgetV2.UpdateChatInputUI();" onkeydown="lz_overlay_c...

Originalmeldung: This fileinput element does not have a name available to an accessibility API. Valid names are: label element, title , aria-label , aria-labelledby .

Selector: #lz_overlay_file_upload

Kontext: <input id="lz_overlay_file_upload" type="file" title="">

Originalmeldung: This form field should be labelled in some way. Use the label element (either with a "for" attribute or wrapped around the form field), or "title", "aria-label" or "aria-labelledby" attributes as appropriate.

Selector: #lz_overlay_file_upload

Kontext: <input id="lz_overlay_file_upload" type="file" title="">

Originalmeldung: Align attributes .

Selector: #lz_group_selection_box > tbody > tr > td:nth-child(2)

Kontext: <td align="right"><select id="lz_form_groups" cla...</td>

Originalmeldung: Duplicate id attribute value "button1" found on the web page.

Selector: #button1

Kontext: <button id="button1" type="button" class="collapsed" data-toggle="collapse" aria-expanded="false" aria-controls="tab-body1"> <div class="cross"><sp...</button>

Originalmeldung: Duplicate id attribute value "button2" found on the web page.

Selector: #button2

Kontext: <button id="button2" type="button" class="collapsed" data-toggle="collapse" aria-expanded="false" aria-controls="tab-body2"> <div class="cross"><sp...</button>

Originalmeldung: Duplicate id attribute value "button3" found on the web page.

Selector: #button3

Kontext: <button id="button3" type="button" class="collapsed" data-toggle="collapse" aria-expanded="false" aria-controls="tab-body3"> <div class="cross"><sp...</button>

Originalmeldung: Duplicate id attribute value "button4" found on the web page.

Selector: #button4

Kontext: <button id="button4" type="button" class="collapsed" data-toggle="collapse" aria-expanded="false" aria-controls="tab-body4"> <div class="cross"><sp...</button>

Originalmeldung: Heading tag found with no content. Text that is not intended as a heading should not be marked up with heading tags.

Selector: #lz_overlay_module_custom > div:nth-child(1) > h2

Kontext: <h2></h2>

Originalmeldung: Iframe element requires a non-empty title attribute that identifies the frame.

Selector: #lz_overlay_module_custom_content > iframe

Kontext: <iframe></iframe>

Originalmeldung: Iframe element requires a non-empty title attribute that identifies the frame.

Selector: #lz_overlay_module_feedback_content > iframe

Kontext: <iframe></iframe>

Originalmeldung: Iframe element requires a non-empty title attribute that identifies the frame.

Selector: #lz_overlay_module_knowledgebase_content > iframe

Kontext: <iframe></iframe>

Originalmeldung: Iframe element requires a non-empty title attribute that identifies the frame.

Selector: #lz_chat_overlay_file_upload_frame

Kontext: <iframe id="lz_chat_overlay_file_upload_frame"></iframe>