Header và footer ẩn hiện theo thanh cuộn

Bài viết này mình hướng dẫn anh em thêm hiệu ứng ẩn hiện thanh header và footer theo thanh cuộn của trình duyệt.
Không dài dòng vào việc luôn, ở 2 demo bên dưới có các tab HTML, CSS, JS tương tứng để ví dụ, anh em click vào xem chi tiết nhé
Ẩn hiện header và footer không cùng lúc

Ẩn hiện header và footer cùng lúc

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_WidgetManager._RegisterWidget('_HeaderView', new _WidgetInfo('Header01', 'sec_Header_Title', document.getElementById('Header01'), {}, 'displayModeFull'));
_WidgetManager._RegisterWidget('_BlogSearchView', new _WidgetInfo('BlogSearch01', 'sec_Header_Search', document.getElementById('BlogSearch01'), {}, 'displayModeFull'));
_WidgetManager._RegisterWidget('_TextListView', new _WidgetInfo('TextList01', 'sec_Header_Icon', document.getElementById('TextList01'), {}, 'displayModeFull'));
_WidgetManager._RegisterWidget('_ProfileView', new _WidgetInfo('Profile01', 'sec_Header_Icon', document.getElementById('Profile01'), {}, 'displayModeFull'));
_WidgetManager._RegisterWidget('_LinkListView', new _WidgetInfo('LinkList02', 'sec_Header_Icon', document.getElementById('LinkList02'), {}, 'displayModeFull'));
_WidgetManager._RegisterWidget('_LinkListView', new _WidgetInfo('LinkList03', 'sec_Header_Icon', document.getElementById('LinkList03'), {}, 'displayModeFull'));
_WidgetManager._RegisterWidget('_HTMLView', new _WidgetInfo('HTML01', 'sec_Nav_Widgets_1', document.getElementById('HTML01'), {}, 'displayModeFull'));
_WidgetManager._RegisterWidget('_PageListView', new _WidgetInfo('PageList02', 'sec_Nav_Widgets_2', document.getElementById('PageList02'), {'title': 'Additional Links', 'links': [{'isCurrentPage': false, 'href': '/p/sitemap.html', 'title': 'Sitemap'}, {'isCurrentPage': false, 'href': '#', 'title': 'Disclaimer'}, {'isCurrentPage': false, 'href': '#', 'title': 'Privacy'}], 'mobile': false, 'showPlaceholder': true, 'hasCurrentPage': false}, 'displayModeFull'));
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_WidgetManager._RegisterWidget('_ImageView', new _WidgetInfo('Image02', 'sec_Carousel', document.getElementById('Image02'), {'resize': false}, 'displayModeFull'));
_WidgetManager._RegisterWidget('_ImageView', new _WidgetInfo('Image03', 'sec_Carousel', document.getElementById('Image03'), {'resize': false}, 'displayModeFull'));
_WidgetManager._RegisterWidget('_ImageView', new _WidgetInfo('Image04', 'sec_Carousel', document.getElementById('Image04'), {'resize': false}, 'displayModeFull'));
_WidgetManager._RegisterWidget('_ImageView', new _WidgetInfo('Image05', 'sec_Carousel', document.getElementById('Image05'), {'resize': false}, 'displayModeFull'));
_WidgetManager._RegisterWidget('_LinkListView', new _WidgetInfo('LinkList82', 'sec_Top_Widgets', document.getElementById('LinkList82'), {}, 'displayModeFull'));
_WidgetManager._RegisterWidget('_FeaturedPostView', new _WidgetInfo('FeaturedPost01', 'sec_Top_Widgets', document.getElementById('FeaturedPost01'), {}, 'displayModeFull'));
_WidgetManager._RegisterWidget('_LinkListView', new _WidgetInfo('LinkList83', 'sec_Main_Widgets', document.getElementById('LinkList83'), {}, 'displayModeFull'));
_WidgetManager._RegisterWidget('_BlogView', new _WidgetInfo('Blog01', 'sec_Main_Widgets', document.getElementById('Blog01'), {'cmtInteractionsEnabled': false, 'lightboxEnabled': true, 'lightboxModuleUrl': 'https://www.blogger.com/static/v1/jsbin/244180678-lbx.js', 'lightboxCssUrl': 'https://www.blogger.com/static/v1/v-css/828616780-lightbox_bundle.css'}, 'displayModeFull'));
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_WidgetManager._RegisterWidget('_LinkListView', new _WidgetInfo('LinkList84', 'sec_Main_Widgets', document.getElementById('LinkList84'), {}, 'displayModeFull'));
_WidgetManager._RegisterWidget('_HTMLView', new _WidgetInfo('HTML11', 'sec_Main_Widgets', document.getElementById('HTML11'), {}, 'displayModeFull'));
_WidgetManager._RegisterWidget('_LinkListView', new _WidgetInfo('LinkList85', 'sec_Bottom_Widgets', document.getElementById('LinkList85'), {}, 'displayModeFull'));
_WidgetManager._RegisterWidget('_PopularPostsView', new _WidgetInfo('PopularPosts01', 'sec_Side_Widgets', document.getElementById('PopularPosts01'), {}, 'displayModeFull'));
_WidgetManager._RegisterWidget('_LabelView', new _WidgetInfo('Label01', 'sec_Side_Widgets', document.getElementById('Label01'), {}, 'displayModeFull'));
_WidgetManager._RegisterWidget('_LinkListView', new _WidgetInfo('LinkList86', 'sec_Side_Sticky', document.getElementById('LinkList86'), {}, 'displayModeFull'));
_WidgetManager._RegisterWidget('_HTMLView', new _WidgetInfo('HTML404', 'sec_Error_404', document.getElementById('HTML404'), {}, 'displayModeFull'));
_WidgetManager._RegisterWidget('_ImageView', new _WidgetInfo('Image21', 'sec_Footer_Organization', document.getElementById('Image21'), {'resize': true}, 'displayModeFull'));
_WidgetManager._RegisterWidget('_LinkListView', new _WidgetInfo('LinkList21', 'sec_Footer_Organization', document.getElementById('LinkList21'), {}, 'displayModeFull'));
_WidgetManager._RegisterWidget('_LinkListView', new _WidgetInfo('LinkList22', 'sec_Footer_Widgets', document.getElementById('LinkList22'), {}, 'displayModeFull'));
_WidgetManager._RegisterWidget('_LinkListView', new _WidgetInfo('LinkList23', 'sec_Footer_Widgets', document.getElementById('LinkList23'), {}, 'displayModeFull'));
_WidgetManager._RegisterWidget('_LinkListView', new _WidgetInfo('LinkList24', 'sec_Footer_Widgets', document.getElementById('LinkList24'), {}, 'displayModeFull'));
_WidgetManager._RegisterWidget('_LinkListView', new _WidgetInfo('LinkList25', 'sec_Footer_Widgets', document.getElementById('LinkList25'), {}, 'displayModeFull'));
_WidgetManager._RegisterWidget('_HTMLView', new _WidgetInfo('HTML21', 'sec_Footer_Bottom', document.getElementById('HTML21'), {}, 'displayModeFull'));
_WidgetManager._RegisterWidget('_TextListView', new _WidgetInfo('TextList99', 'sec_Mobile_Menu', document.getElementById('TextList99'), {}, 'displayModeFull'));
_WidgetManager._RegisterWidget('_LabelView', new _WidgetInfo('Label41', 'sec_Theme_Hidden', document.getElementById('Label41'), {}, 'displayModeFull'));
_WidgetManager._RegisterWidget('_ContactFormView', new _WidgetInfo('ContactForm41', 'sec_Theme_Hidden', document.getElementById('ContactForm41'), {'contactFormMessageSendingMsg': 'Sending...', 'contactFormMessageSentMsg': 'Your message has been sent.', 'contactFormMessageNotSentMsg': 'Message could not be sent. Please try again later.', 'contactFormInvalidEmailMsg': 'A valid email address is required.', 'contactFormEmptyMessageMsg': 'Message field cannot be empty.', 'title': '\u09af\u09cb\u0997\u09be\u09af\u09cb\u0997 \u09ab\u09b0\u09cd\u09ae', 'blogId': '637151969796757870', 'contactFormNameMsg': 'Name', 'contactFormEmailMsg': 'Email', 'contactFormMessageMsg': 'Message', 'contactFormSendMsg': 'Send', 'contactFormToken': 'AOuZoY7mVNBdvg46OSFesEQXd_rJGhV0yQ:1764999085679', 'submitUrl': 'https://www.blogger.com/contact-form.do'}, 'displayModeFull'));
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_WidgetManager._RegisterWidget('_LinkListView', new _WidgetInfo('LinkList61', 'sec_Addon_Widgets', document.getElementById('LinkList61'), {}, 'displayModeFull'));
_WidgetManager._RegisterWidget('_LinkListView', new _WidgetInfo('LinkList62', 'sec_Addon_Widgets', document.getElementById('LinkList62'), {}, 'displayModeFull'));
_WidgetManager._RegisterWidget('_LinkListView', new _WidgetInfo('LinkList63', 'sec_Addon_Widgets', document.getElementById('LinkList63'), {}, 'displayModeFull'));
_WidgetManager._RegisterWidget('_ImageView', new _WidgetInfo('Image61', 'sec_Addon_Widgets', document.getElementById('Image61'), {'resize': false}, 'displayModeFull'));
</script>
</body>
Blogspot Việt Nam

Header và footer ẩn hiện theo thanh cuộn

Ẩn hiện header và footer không cùng lúc

Ẩn hiện header và footer cùng lúc

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Widget bài này năm xưa giống Facebook

Tự ẩn liên kết nếu không update sau 1 khoảng thời gian

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Thêm chức năng Bookmark cho blogspot

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