我正在寻找执行此操作的jQuery插件(或代码/指南):http://codecanyon.net/item/jquery-css3-sticky-mega-menu-bar/full_screen_preview/239093
这个不是免费的
注意:请注意,导航栏不是从头开始放置在顶部。一旦视口“击中”它就会粘住它。
答案 0 :(得分:8)
Anthony Garand也有一个非常粘的插件 - 全部免费并且实际上是在GitHub上维护的:
答案 1 :(得分:3)
您可以对@genesis链接进行逆向工程,这是您正在寻找的确切脚本(不是不难)
我找不到非缩小版的网址..所以这里是。
(function ($) {
$.fn.stickyMenubar = function (o) {
o = $.extend({
top: null,
floatingDiv: null,
floatingDivBackground: false,
megaMenu: true,
onScroll: function () {},
onLeaveTop: function () {},
sensitivity: 7,
padding: 5,
container_width: 960
}, o || {});
var setLiActions = function (t, lvl) {
var parent_ul = t.children('ul:first');
if (lvl > 0) {
t.addClass('inner_menu').hide();
} else {
if (!o.floatingDivBackground) {
t.addClass('smenubar_background');
}
}
t.mouseleave(function () {
$(this).children('li').children('ul').hide();
});
t.children('li').each(function () {
var li = $(this);
var class_parent = '';
var class_child = '';
var uls = li.children('ul');
if (uls.length) {
uls.each(function () {
setLiActions($(this), lvl + 1);
})
if (lvl == 0) {
li.children('a:first').addClass('arrow_down');
} else {
li.children('a:first').addClass('arrow_right');
}
if (!$.fn.hoverIntent) {
alert('hoverIntent javascript library must be included');
return;
}
var config = {
over: function () {
if (lvl == 0) {
$(this).parent().children('li').not($(this)).children('ul').hide();
var inner_ul = li.children('ul:first');
var pos = li.position();
var pos_ul = inner_ul.position();
var top_c = pos.top + li.height();
if (inner_ul.hasClass('show2left')) {
var left_c = pos.left - inner_ul.width() + li.width() + (o.padding * 2);
class_parent = 'inuseleft';
class_child = 'inusechildleft';
class_panel = 'left_slide';
inner_ul.addClass('topleftradius')
} else if (inner_ul.hasClass('mega_menu')) {
var left_c = 0 + ($(document).width() / 2) - (o.container_width / 2);
class_parent = 'inusemega', class_child = 'inusechildmega';
class_panel = 'mega_slide';
inner_ul.addClass('topleftradius').addClass('toprightradius');
} else {
var left_c = pos.left;
class_parent = 'inuse';
class_child = 'inusechild';
class_panel = 'right_slide';
inner_ul.addClass('toprightradius');
}
if (!$.browser.msie || ($.browser.msie && ($.browser.version > 7.0))) {
if (inner_ul.width() <= (li.width() + (o.padding * 2))) {
inner_ul.css('width', li.width() + (o.padding * 2));
inner_ul.removeClass('topleftradius').removeClass('toprightradius');
}
}
inner_ul.stop(true, true).css({
top: top_c,
left: left_c
}).addClass(class_panel).slideDown(150);
li.addClass(class_child);
} else {
var inner_ul = li.children('ul');
var pos = li.position();
var pos_ul = inner_ul.position();
var top_c = pos.top;
if (inner_ul.hasClass('show2left')) {
var left_c = pos.left - inner_ul.width() + li.width() - 1;
class_parent = 'inuseleft';
class_child = 'inusechildleft';
class_panel = 'left_slide';
} else {
var left_c = pos.left + li.width();
if ($.browser.mozilla) {
left_c--;
}
class_parent = 'inuse';
class_child = 'inusechild';
class_panel = 'right_slide';
}
inner_ul.css({
top: top_c,
left: left_c
}).addClass(class_panel).css({
'white-space': 'nowrap'
}).stop(true, true).animate({
width: 'toggle'
}, 300);
li.addClass(class_child);
}
},
sensitivity: o.sensitivity,
timeout: 200,
out: function () {
li.stop(true, true).removeClass(class_child).children('ul').hide();
}
};
li.each(function () {
$(this).hoverIntent(config);
$(this).mouseleave(function () {
if (lvl == 0) {
$(this).children('ul').hide();
}
});
});
} else {
li.mouseenter(function () {
li.stop(true, true).addClass(class_parent);
});
li.mouseleave(function () {
li.stop(true, true).removeClass(class_parent).children('ul').hide();
});
}
});
}
return this.each(function () {
var t = $(this);
t.addClass('smenubar');
if (!o.floatingDiv) {
var floatingDiv = t;
} else {
var floatingDiv = o.floatingDiv;
floatingDiv.css({
width: '100%'
});
}
var top_Y = 0;
if (!o.top) {
top_Y = floatingDiv.position().top;
} else {
top_Y = o.top;
}
if (o.floatingDivBackground) {
floatingDiv.addClass('smenubar_background');
t.css({
'border-bottom': 'none'
});
}
$(window).scroll(function () {
if ($(this).scrollTop() >= top_Y) {
if (!($.browser.msie && ($.browser.version <= 7.0))) {
floatingDiv.addClass('float_top');
o.onLeaveTop.call(this);
}
} else {
floatingDiv.removeClass('float_top').removeClass('float_top_ie7');
o.onScroll.call(this);
}
var open_menu = $('.inner_menu:visible');
var parent_li = open_menu.parent();
var pos = parent_li.position();
open_menu.css({
top: pos.top + parent_li.height()
});
});
t.find('.toggle_block').slideToggle();
t.find('.toggle_handle').html('...').css('text-align', 'center');
t.find('a').click(function () {
if ($(this).hasClass('toggle_handle')) {
var prev = $(this).parent().prev('.toggle_block');
prev.slideToggle().prevUntil(':not(.toggle_block)').slideToggle();
}
if ($(this).attr('href') == '#') {
event.preventDefault();
return;
}
});
if (o.megaMenu == true) {
setLiActions(t, 0);
}
});
};
})(jQuery);
玩弄它。通常这些插件具有可扩展性和可定制性,因此存在一堆垃圾代码。您想要的大部分内容似乎都被包含在
中(window).scroll(function () {
if ($(this).scrollTop() >= top_Y) {
if (!($.browser.msie && ($.browser.version <= 7.0))) {
floatingDiv.addClass('float_top');
o.onLeaveTop.call(this);
}
} else {
floatingDiv.removeClass('float_top').removeClass('float_top_ie7');
o.onScroll.call(this);
}
var open_menu = $('.inner_menu:visible');
var parent_li = open_menu.parent();
var pos = parent_li.position();
open_menu.css({
top: pos.top + parent_li.height()
});
});