向下滑动导航列表项目

时间：2015-07-31 09:19:34

标签： jquery html css navigation

我有一个向下滑动的导航，背景颜色向下滑动，列表项淡入，但不是从顶部向下移动，这就是我想要实现的目标。

使用addClass / removeClass添加顶部值必须简单，但似乎无法在javascript中使用。

注意：.nav-toggle是汉堡包图标，它是可以正常工作的触发器。

希望有人可以帮助我。

--> Fiddle

使用Javascript：

// Navigation //

$(function() {
$('.nav-toggle').click(function() {
    event.preventDefault();
    $('nav ul.right-nav').slideFadeToggle(300);
    $('.nav-toggle').toggleClass('is-active');
})
});

$(window).scroll(function() {
if ($(this).scrollTop() > 50) {
    $('nav ul.right-nav').hide();
    $('.nav-toggle').removeClass('is-active');
}
});

$.fn.slideFadeToggle  = function(speed, easing, callback) {
return this.animate({opacity: 'toggle', height: 'toggle'}, speed,  easing, callback);
};

HTML：

<header>
<nav>
    <div class="mobile-nav">
        <div class="nav-toggle"><i class="nav-icon"></i></div>
    </div>
    <ul class="left-nav">   
        <li class="home"><a href="#">Pixelation</a></li>    
    </ul>
    <ul class="right-nav">  
        <li><a href="#">Work</a></li>
        <li><a href="#">About</a></li>
        <li><a href="#">Contact</a></li>
    </ul>
</nav>
</header>

2 个答案:

答案 0 :(得分：1)

我修改了你的jQuery，检查this。

// Navigation //

$(function() {
    $('.nav-toggle').click(function() {
        event.preventDefault();
        $('.right-nav li').slideToggle(300);
        $('.nav-toggle').toggleClass('is-active');
    })
});

$(window).scroll(function() {
    if ($(this).scrollTop() > 50) {
        $('nav ul.right-nav').hide();
        $('.nav-toggle').removeClass('is-active');
    }
});

$.fn.slideFadeToggle  = function(speed, easing, callback) {
    return this.animate({opacity: 'toggle', height: 'toggle'}, speed, easing, callback);
}; 
* {
  margin: 0;
  padding: 0;
  -webkit-box-sizing: border-box; /* width and height value includes content, padding and border not the margin */
  -moz-box-sizing: border-box;
  box-sizing: border-box;
  -webkit-tap-highlight-color: rgba(0,0,0,0); /* remove highlight on touch devices */
  -webkit-tap-highlight-color: transparent;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

html {
  position: relative;
  min-height: 100%; /* sticky footer  */
  overflow-y: scroll;
}

body {
  font-family: "Helvetica Neue", helvetica, arial, sans-serif;
  font-weight: normal;
  font-size: 18px;
  line-height: 1.3;
  letter-spacing: 0.02em;
  color: #000;
  background-color: transparent;
}

h1, h2, p, nav {
    text-rendering: optimizelegibility !important;
}

b, strong {
  font-weight: normal;
}

a:link, a:visited {
  color: #000;
  text-decoration: none;
}

h1, h2, nav a {
  font-weight: normal;
  text-transform: uppercase;
  text-decoration: none;
  margin: 0;
  -webkit-column-span: all; /* break out the column flow */ 
          column-span: all;
}

h1, nav a {
  font-size: 21px;
  text-align: center;
}

/************************************************
Navigation
************************************************/

header {
  position: fixed;
  width: 100%;
  top: 0;
  left: 0;
  margin: 0;
  padding: 0;
  z-index: 9999;
  background-color: transparant;
  -webkit-transition: all 0.3s;
  -moz-transition: all 0.3s;
  -ms-transition: all 0.3s;
  -o-transition: all 0.3s;
  transition: all 0.3s;
}

.mobile-nav {
  display: none; /* hide mobile nav */
}

nav {
  position: relative;
  padding: 0 10px;
}

nav ul {
  list-style: none;
  font-size: 0; /* remove default spacing */
}

nav ul.left-nav {
  float: left;
}

nav ul.right-nav {
  float: right;
}

nav li {
  display: inline-block;
}

nav a {
  text-align: center;
  text-decoration: none;
  background-color: transparent;
  margin: 0 10px;
  line-height: 60px;
}

nav ul.right-nav a:link, 
nav ul.right-nav a:visited {
  color: #000;
  text-decoration: none;
}

nav ul.right-nav a:hover,
nav ul.right-nav a:focus, 
nav ul.right-nav li.selected {
  color: #000;
  border-bottom: 2px solid black;
}

/************************************************
Navicon
************************************************/

.nav-toggle {
  display: block;
  position: absolute;
  cursor: pointer;
  padding: 14px 0;
  left: 10px;
  z-index: 3;
}

.nav-icon {
  position: relative;
  margin-top: 7px;
  margin-bottom: 7px;
}

.nav-icon, 
.nav-icon:before, 
.nav-icon:after {
  display: block;
  width: 24px;
  height: 2px;
  background-color: black;
  -webkit-transition-property: background-color, -webkit-transform;
  -moz-transition-property: background-color, -moz-transform;
  -o-transition-property: background-color, -o-transform;
  transition-property: background-color, transform;
  -webkit-transition-duration: 0.2s;
  -moz-transition-duration: 0.2s;
  -o-transition-duration: 0.2s;
  transition-duration: 0.2s;
}

.nav-icon:before, 
.nav-icon:after {
  position: absolute;
  content: "";
}

.nav-icon:before {
  top: -7px;
}

.nav-icon:after {
  top: 7px;
}

.nav-toggle.is-active .nav-icon {
  background-color: transparent;
}

.nav-toggle.is-active .nav-icon:before {
  -webkit-transform: translateY(7px) rotate(45deg);
  -moz-transform: translateY(7px) rotate(45deg);
  -ms-transform: translateY(7px) rotate(45deg);
  -o-transform: translateY(7px) rotate(45deg);
  transform: translateY(7px) rotate(45deg);
}

.nav-toggle.is-active .nav-icon:after {
  -webkit-transform: translateY(-7px) rotate(-45deg);
  -moz-transform: translateY(-7px) rotate(-45deg);
  -ms-transform: translateY(-7px) rotate(-45deg);
  -o-transform: translateY(-7px) rotate(-45deg);
  transform: translateY(-7px) rotate(-45deg);
}

/************************************************
Responsive
************************************************/

@media screen and (max-width:1012px) {
   .size-m {
    max-width: 700px; /* bigger text width */
   }
}

@media screen and (max-width:667px) {
    .compact-group .compact-item {
      width: -webkit-calc(50% - 2px * 2);
      width: calc(50% - 2px * 2);
      /* when max-width is less than this value it will 
      always display two resizing thumbnails next to each other */
    }
}

@media all and (min-width: 668px) {
    nav ul.right-nav {
      display: block !important;
    }
}

@media all and (max-width: 667px) {
    header {
      position: fixed;
      background-color: red;
    }

    .home {
      background-color: white;
      padding-left: 50px;
      padding-right: 50px;
    }

    .nav-up {
      top:-44px; /* hide navigation on scroll */
    }

    .mobile-nav {
      display: block; /* show mobile navigation */
    }

    nav {
      padding-left: 0;
      padding-right: 0;
    }

    nav ul.left-nav {
      float: none;
    }

    .right-nav {
      float: none;
      /* display: none; */
    }

    nav li {
      width: 100%;
    }

    nav a {
      display: block;
      margin: 0;
      line-height: 44px;
    }

    nav ul.right-nav a:hover,
    nav ul.right-nav li.selected {
      text-decoration: underline;
      border-bottom: none; /* remove border when mobile */
    }

    .grid-wrapper {
      margin-top: 60px;
    }
}

@media all and (max-width: 600px) {
    body { 
      font-size: 18px;
    }

    h1, h2, nav a {
      font-size: 21px;
    }

    h1 {
      margin: 0 0 20px 0;
    }

    p {
      margin: 0 0 20px 0;
    }
}

@media all and (max-width: 480px) {
    .grid-item a:hover img {
      opacity: 1.0;
    }   

    .copy {
      padding: 20px 10px;
    }

    .copy-img {
      padding: 20px 0;
    }

    .caption {
      display: none; /* remove caption on mobile devices */
    }
    
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<header>
	<nav>
		<div class="mobile-nav">
			<div class="nav-toggle"><i class="nav-icon"></i></div>
		</div>
		<ul class="left-nav">	
			<li class="home"><a href="#">Pixelation</a></li>	
		</ul>
		<ul class="right-nav">	
			<li><a href="#">Work</a></li>
			<li><a href="#">About</a></li>
            <li><a href="#">Contact</a></li>
		</ul>
	</nav>
</header>

答案 1 :(得分：0)

使用function(event)代替function()

你脚本中的

$('.nav-toggle').click(function(event) {
        //  code
}

演示 - https://jsfiddle.net/kkxtr8ze/5/

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