jQuery 取消绑定文档点击绑定到滚动位置
我需要一些帮助来调整 jquery 函数的逻辑。该功能的工作原理如下:
有两个导航,主导航和子导航,这两个导航在页面加载时都是可见的。如果窗口滚动超过 375px(以便子导航不再可见),导航上会出现悬停效果,使子导航 div 向下滑动并更改为固定位置。如果您将鼠标悬停在该导航上或单击该导航,它就会向上滑动。当您向上滚动到 375 像素以下时,备用导航将再次显示在适当的位置。
我的问题是,当你低于 375px 并单击文档时,它仍然使子导航元素向上滑动,这使得窗口滚动,这反过来又使 div 再次改变位置 - 导致一个不稳定的循环滑动和位置变化。
基本上我需要取消绑定点击事件,但这样做遇到了麻烦...
我需要取消绑定的功能是:
headerClickOff()
这是完整的 jQuery:
$(window).scroll(function() {
var scrolledpx = parseInt($(window).scrollTop());
if (scrolledpx < 375) {
$('#nav ul, #header').unbind('mouseenter mouseleave');
$(document).unbind('clicl');
$('#header').addClass('showNav');
} else {
$('#header').removeClass('showNav');
$('#nav ul').hover(function () {
$('#header').slideDown({
duration: 650,
easing: 'easeOutExpo'
}).css({
'position' : 'fixed',
'top' : '0px'
});
function headerClickOff() {
$(document).click(function() {
$('#header:visible').slideUp({
duration: 550,
easing: 'easeOutExpo'
});
});
}
headerClickOff();
$('#header').click(function( event ) {
event.stopPropagation();
});
}, function () {
$('#header').hover(function () {
}, function () {
$('#header').slideUp({
duration: 550,
easing: 'easeOutExpo'
});
});
});
}
});
和 CSS:
#headerContainer {
width: 960px;
position: relative;
z-index: 900;
}
#header {
position: relative;
width: 940px;
background: #fff;
padding: 74px 0 20px 20px;
z-index: 1000;
box-shadow: 0px 0px 13px #c3c1bd;
-moz-box-shadow: 0px 0px 13px #c3c1bd; /* Firefox */
-webkit-box-shadow: 0px 0px 13px #c3c1bd; /* Safari, Chrome */
}
#nav {
width: 100%;
height: 49px;
position: fixed;
left: 0;
top: 0;
z-index: 2000;
}
#nav ul {
height: 49px;
width: 920px;
display: block;
}
#nav ul li {
height: 32px;
list-style: none;
display: block;
float: left;
background: #000;
border-left: 1px solid #fff;
font-family: "Fette";
letter-spacing: 1px;
text-transform: uppercase;
}
#nav ul li a {
display: block;
float: left;
color: #ccc;
background: #000;
height: 32px;
padding: 7px 14px 0 14px;
}
#nav ul li a:hover {text-decoration: none; background: #0099CC}
.showNav {
display: block !important;
position: relative !important;
top: 0px !important;
padding-bottom: 20px !important;
}
这是 HTML:
<div id="nav">
<ul class="center">
<li>
<a id="logo" href="index.html">
<img src="assets/images/logo.png" alt="" />
</a>
</li>
<li>
<a href="#">About</a>
</li>
<li>
<a href="#">Contributors</a>
</li>
<li>
<a href="#">Contact</a>
</li>
</ul> <!-- nav -->
</div>
<div id="headerContainer" class="center">
<div id="header">
<h3 id="scrapHeader">Thoughts About:</h3>
<input id="headerSearch" type="text" value="search" />
<input id="headerSearchBtn" type="submit" value="" />
<div class="clear"></div>
<div id="categoryContainer">
<ul>
<li>
<a href="#">Design</a>
<strong>143</strong>
</li>
<li>
<a href="#">Building</a>
<strong>143</strong>
</li>
<li>
<a href="#">Brands</a>
<strong>143</strong>
</li>
<li>
<a href="#">Technology</a>
<strong>143</strong>
</li>
<li>
<a href="#">Fashion</a>
<strong>143</strong>
</li>
<li>
<a href="#">Leadership</a>
<strong>123</strong>
</li>
<li>
<a href="#">Architecture</a>
<strong>117</strong>
</li>
<li>
<a href="#">Sustainability</a>
<strong>108</strong>
</li>
<li>
<a href="#">Modern</a>
<strong>95</strong>
</li>
<li>
<a href="#">Advertising</a>
<strong>84</strong>
</li>
<li>
<a href="#">Film</a>
<strong>82</strong>
</li>
<li class="clear"></li>
</ul>
<span id="categoryMore">More</span>
<div class="clear"></div>
</div> <!-- categoryContainer -->
<div class="clear"></div>
</div> <!-- header -->
<div class="clear"></div>
</div>
I need some help adjusting the logic of my jquery function. Here's how the function works:
There are two navs, the main-nav and sub-nav both of which are visible when page loads. If the window is scrolled past 375px (so that the sub-nav is no longer visible), there is a hover effect on the navigation which makes the sub-nav div slide down and changed to a fixed position. If you hover or click off of that navigation, it slides up. When you scroll back up below 375px, the alternate navigation is displayed again in place.
My problem is that when you are below 375px and click on the document, it still makes the sub-nav element slide up, which makes the window scroll, which in turn makes the div change position again– resulting in a jerky cycle of sliding and position changes.
Basically I need to unbind a click event but am having trouble doing so...
The function i need to unbind is:
headerClickOff()
Here's the full jQuery:
$(window).scroll(function() {
var scrolledpx = parseInt($(window).scrollTop());
if (scrolledpx < 375) {
$('#nav ul, #header').unbind('mouseenter mouseleave');
$(document).unbind('clicl');
$('#header').addClass('showNav');
} else {
$('#header').removeClass('showNav');
$('#nav ul').hover(function () {
$('#header').slideDown({
duration: 650,
easing: 'easeOutExpo'
}).css({
'position' : 'fixed',
'top' : '0px'
});
function headerClickOff() {
$(document).click(function() {
$('#header:visible').slideUp({
duration: 550,
easing: 'easeOutExpo'
});
});
}
headerClickOff();
$('#header').click(function( event ) {
event.stopPropagation();
});
}, function () {
$('#header').hover(function () {
}, function () {
$('#header').slideUp({
duration: 550,
easing: 'easeOutExpo'
});
});
});
}
});
and CSS:
#headerContainer {
width: 960px;
position: relative;
z-index: 900;
}
#header {
position: relative;
width: 940px;
background: #fff;
padding: 74px 0 20px 20px;
z-index: 1000;
box-shadow: 0px 0px 13px #c3c1bd;
-moz-box-shadow: 0px 0px 13px #c3c1bd; /* Firefox */
-webkit-box-shadow: 0px 0px 13px #c3c1bd; /* Safari, Chrome */
}
#nav {
width: 100%;
height: 49px;
position: fixed;
left: 0;
top: 0;
z-index: 2000;
}
#nav ul {
height: 49px;
width: 920px;
display: block;
}
#nav ul li {
height: 32px;
list-style: none;
display: block;
float: left;
background: #000;
border-left: 1px solid #fff;
font-family: "Fette";
letter-spacing: 1px;
text-transform: uppercase;
}
#nav ul li a {
display: block;
float: left;
color: #ccc;
background: #000;
height: 32px;
padding: 7px 14px 0 14px;
}
#nav ul li a:hover {text-decoration: none; background: #0099CC}
.showNav {
display: block !important;
position: relative !important;
top: 0px !important;
padding-bottom: 20px !important;
}
here's the HTML:
<div id="nav">
<ul class="center">
<li>
<a id="logo" href="index.html">
<img src="assets/images/logo.png" alt="" />
</a>
</li>
<li>
<a href="#">About</a>
</li>
<li>
<a href="#">Contributors</a>
</li>
<li>
<a href="#">Contact</a>
</li>
</ul> <!-- nav -->
</div>
<div id="headerContainer" class="center">
<div id="header">
<h3 id="scrapHeader">Thoughts About:</h3>
<input id="headerSearch" type="text" value="search" />
<input id="headerSearchBtn" type="submit" value="" />
<div class="clear"></div>
<div id="categoryContainer">
<ul>
<li>
<a href="#">Design</a>
<strong>143</strong>
</li>
<li>
<a href="#">Building</a>
<strong>143</strong>
</li>
<li>
<a href="#">Brands</a>
<strong>143</strong>
</li>
<li>
<a href="#">Technology</a>
<strong>143</strong>
</li>
<li>
<a href="#">Fashion</a>
<strong>143</strong>
</li>
<li>
<a href="#">Leadership</a>
<strong>123</strong>
</li>
<li>
<a href="#">Architecture</a>
<strong>117</strong>
</li>
<li>
<a href="#">Sustainability</a>
<strong>108</strong>
</li>
<li>
<a href="#">Modern</a>
<strong>95</strong>
</li>
<li>
<a href="#">Advertising</a>
<strong>84</strong>
</li>
<li>
<a href="#">Film</a>
<strong>82</strong>
</li>
<li class="clear"></li>
</ul>
<span id="categoryMore">More</span>
<div class="clear"></div>
</div> <!-- categoryContainer -->
<div class="clear"></div>
</div> <!-- header -->
<div class="clear"></div>
</div>
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