垂直滚动导航

下载代码

html

css

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html

<section class="items">
  <div class="item main">
    <span>Scroll</span>
  </div>
  
  <div class="item">
    <span>1</span>
  </div>

css

@import url(https://fonts.googleapis.com/css?family=Squada+One);
* {
  box-sizing: border-box;
}

body {
  background: #000;
  padding: 0px;
  margin: 0px;
}

nav {
  background: rgba(0, 0, 0, 0.8);
  padding: 18px;
  position: fixed;
  bottom: 50px;
  height: 55px;
  left: 50%;
  width: 800px;
  margin-left: -400px;
  z-index: 3;
}
nav .wrapper {
  padding: 0;
  width: 785px;
}
nav .wrapper, nav svg {
  height: 100%;
}
nav svg {
  margin-right: 15px;
  cursor: pointer;
  height: 20px;
  width: 30px;
  float: left;
}
nav svg path, nav svg rect {
  fill: #fff;
}
nav .nodes {
  position: relative;
  margin-top: -5px;
  margin-left: 5px;
  float: left;
}

.line {
  position: absolute;
  width: 705px;
  height: 1px;
  top: 14px;
}
.line .red, .line .blue {
  width: 100%;
  height: 1px;
}
.line .red-container {
  overflow: hidden;
  height: 1px;
  width: 58px;
}
.line .red {
  background-color: #4b1202;
  *zoom: 1;
  filter: progid:DXImageTransform.Microsoft.gradient(gradientType=1, startColorstr='#FF4B1202', endColorstr='#FFFD8107');
  background-image: url('data:image/svg+xml;base64,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');
  background-size: 100%;
  background-image: -webkit-gradient(linear, 0% 50%, 100% 50%, color-stop(0%, #fd8107), color-stop(16%, #fd8107), color-stop(58%, #e03a0d), color-stop(100%, #fd8107));
  background-image: -moz-linear-gradient(left, #fd8107 0%, #fd8107 16%, #e03a0d 58%, #fd8107 100%);
  background-image: -webkit-linear-gradient(left, #fd8107 0%, #fd8107 16%, #e03a0d 58%, #fd8107 100%);
  background-image: linear-gradient(to right, #fd8107 0%, #fd8107 16%, #e03a0d 58%, #fd8107 100%);
}
.line .blue {
  background-color: #232e3a;
  *zoom: 1;
  filter: progid:DXImageTransform.Microsoft.gradient(gradientType=1, startColorstr='#FF232E3A', endColorstr='#FF446B95');
  background-image: url('data:image/svg+xml;base64,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');
  background-size: 100%;
  background-image: -webkit-gradient(linear, 0% 50%, 100% 50%, color-stop(0%, #232e3a), color-stop(29%, #5c7d9f), color-stop(55%, #183757), color-stop(100%, #446b95));
  background-image: -moz-linear-gradient(left, #232e3a 0%, #5c7d9f 29%, #183757 55%, #446b95 100%);
  background-image: -webkit-linear-gradient(left, #232e3a 0%, #5c7d9f 29%, #183757 55%, #446b95 100%);
  background-image: linear-gradient(to right, #232e3a 0%, #5c7d9f 29%, #183757 55%, #446b95 100%);
}

.node {
  margin-left: 90px;
  width: 20px;
  height: 20px;
  margin-top: 5px;
  float: left;
  margin-right: -10px;
  position: relative;
}
.node .splash {
  box-shadow: 0px 0px 8px 2px rgba(69, 174, 233, 0.53);
  transform: translateZ(0px) scale(1);
  position: absolute;
  width: 20px;
  height: 20px;
  border-radius: 100%;
  pointer-events: none;
  opacity: 1;
}
.node.active .active-circle {
  transform: scale(1);
  opacity: 1;
}
.node.active .splash {
  transition: transform 1200ms, opacity 1500ms;
  transform: translateZ(0px) scale(2.5);
  opacity: 0 !important;
}
.node.active .inactive-circle {
  transition: opacity 200ms;
  opacity: 0;
}
.node .active-circle {
  transition: all 300ms cubic-bezier(0.63, 0.62, 0.48, 1.84);
  transform: scale(0.7);
  position: absolute;
  opacity: 0;
  width: 20px;
  height: 20px;
  border-radius: 100%;
  background-color: #4b1202;
  *zoom: 1;
  filter: progid:DXImageTransform.Microsoft.gradient(gradientType=1, startColorstr='#FF4B1202', endColorstr='#FFFD8107');
  background-image: url('data:image/svg+xml;base64,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');
  background-size: 100%;
  background-image: -webkit-gradient(linear, 0% 100%, 100% 0%, color-stop(0%, #4b1202), color-stop(60%, #e03a0d), color-stop(100%, #fd8107));
  background-image: -moz-linear-gradient(left bottom, #4b1202 0%, #e03a0d 60%, #fd8107 100%);
  background-image: -webkit-linear-gradient(left bottom, #4b1202 0%, #e03a0d 60%, #fd8107 100%);
  background-image: linear-gradient(to right top, #4b1202 0%, #e03a0d 60%, #fd8107 100%);
}
.node .active-circle .cover {
  transform: translateZ(0px);
  width: 16px;
  height: 16px;
  background: black;
  border-radius: 100%;
  position: absolute;
  top: 2px;
  left: 2px;
}
.node .active-circle .white {
  transition: all 300ms cubic-bezier(0.63, 0.62, 0.48, 1.84);
  width: 6px;
  height: 6px;
  background: #fff;
  border-radius: 100%;
  position: absolute;
  transform: translateX(5px) translateY(5px) scale(1);
}
.node .inactive-circle {
  transition: all 300ms cubic-bezier(0.63, 0.62, 0.48, 1.84);
  width: 14px;
  height: 14px;
  display: block;
  background: #000;
  position: absolute;
  border-radius: 100%;
  border: 2px solid #5489b1;
  top: 3px;
  left: 3px;
}
.node:hover {
  cursor: pointer;
}
.node:hover .active-circle {
  transition: all 200ms cubic-bezier(0.63, 0.62, 0.48, 1.84);
  transform: scale(0.84);
}
.node:hover .active-circle .white {
  transition: all 200ms cubic-bezier(0.63, 0.62, 0.48, 1.84);
  transform: translateX(4.7px) translateY(5px) scale(1.42);
}
.node:hover .inactive-circle {
  transition: all 200ms cubic-bezier(0.63, 0.62, 0.48, 1.84);
  transform: scale(0.85);
}

.items {
  position: relative;
}
.items .item {
  position: relative;
  width: 100%;
  height: 100%;
}
.items .item span {
  font-family: 'Squada One', cursive;
  color: #fff;
  display: block;
  height: 200px;
  width: 400px;
  margin: auto;
  position: absolute;
  top: 0;
  left: 0;
  bottom: 0;
  right: 0;
  text-align: center;
  font-size: 160px;
}

JavaScript

$( '.item' ).height( window.innerHeight );
var $document = $( document.body );
var $revealBar = $( '.red-container' );
var wrapperHeight = $document.height();
var stepDistance = 101;
var documentHeight = window.innerHeight;
var positions = [];
var heights = [];
var elements = $( '.item:not(".main")' );

// Cache heights and positions
for( var i = 0; i < elements.length; i++ ) {
  var $element = $(elements[i]);
  var height = $element.offset().top + documentHeight;
  if (height > wrapperHeight) {
    height = wrapperHeight;
  }
  positions.push(height);
  heights.push($element.height());
}

var $nodes =  $( '.node' );

// Should totally be debounced /w animation frame. I know,
// this whole thing is slightly inefficient.
// And magic numbers too!
$( document ).scroll( function() {

nodeTop = $document.scrollTop() + documentHeight + 1;
  var current = 0;
  
  // Active/non active states
  for( var i = 0; i < positions.length; i++ ) {
    if(nodeTop > positions[i]) {
      current = i;
      $nodes.eq( i ).addClass( 'active' );
    } else {
      $nodes.eq( i ).removeClass( 'active' );
    }
  }
  
  // Bar positioning, so sections can have different heights.
  var distanceToNext = 0;
  
  // Initial node, already has some of the bar filled.
  if( nodeTop < positions[0] ) {	
    var nextStep = (nodeTop - positions[current]) / (positions[current + 1] - positions[current]);
    
    // Calculating for node widths.
    var totalWidth = ((stepDistance) + ( current * stepDistance ) + (nextStep * stepDistance)) * 0.4;
    $revealBar.width( (0.6 * stepDistance) + totalWidth );

// Final node covered.
  } else if (nodeTop > positions[6]) {
    $revealBar.width(stepDistance * (current + 1));
  
  // regular nodes
  } else if ( current < elements.length ) {
    var nextStep = (nodeTop - positions[current]) / (positions[current + 1] - positions[current]);
    var totalWidth = stepDistance + ( current * stepDistance ) + (nextStep * stepDistance);
	 $revealBar.width( totalWidth );
  }
})

// Clicking the nodes... again, nothing special ;)
$nodes.each( function( index ) {
  var $node = $( this );
  $node.click( function() {
    $('html, body').animate({ scrollTop: (positions[ index ] - documentHeight + 10)}, 1000 );
  });
})

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