div 按下按钮时不淡入

Question

所以基本上我有一些 javascript 应该在用户单击按钮时淡入页面。但由于某种原因它不起作用。当您单击 div 上的任意位置时，它也应该淡出。有什么问题吗？

//Menu
function expand(){
  $(this).toggleClass("on");
  $(".menu").toggleClass("active");
};
$(".button").on('click', expand);

//Page transition
$(function() { 
    
  $('#about').click(function() {
    var bodyContent = $('#aboutContent')
    bodyContent.fadeIn(400);
    
    bodyContent.click(function(e) {
      if($(e.target).hasClass('fa-times')) {
        $(this).fadeOut(400);
      } else if(!$(e.target).hasClass('fa')) {
        $(this).fadeOut(400);
      }
    })
  });
    
  $('#projects').click(function() {
    var bodyContent = $('#projectsContent')
    bodyContent.fadeIn(400);
    
    bodyContent.click(function(e) {
      if($(e.target).hasClass('fa-times')) {
        $(this).fadeOut(400);
      } else if(!$(e.target).hasClass('fa')) {
        $(this).fadeOut(400);
      }
    })
  });
  
  $('#contact').click(function() {
    var bodyContent = $('#contactContent')
    bodyContent.fadeIn(400);
    
    bodyContent.click(function(e) {
      if($(e.target).hasClass('fa-times')) {
        $(this).fadeOut(400);
      } else if(!$(e.target).hasClass('fa')) {
        $(this).fadeOut(400);
      }
    })
  });
  
});

body {
  background-color: black;
  font-family: "Source Sans Pro", sans-serif;
  color: #ccc;
  z-index: -100;
  background-color:black;
  overflow: hidden;
}

#aboutContent {
    width: 100%;
    height: 100%;
    background-color: #393939;
    z-index: 1000;
}

#projectsContent {
    width: 100%;
    height: 100%;
    background-color: #393939;
    z-index: 100;
}

#contactContent {
    width: 100%;
    height: 100%;
    background-color: #393939;
    z-index: 100;
}

.menu {
  position: absolute;
  top: 0;
  left: 0;
  bottom: 0;
  padding: 0;
  overflow: hidden;
  background: rgba(25, 25, 25, .5);
  width: 18%;
  box-sizing: border-box;
  transition: all 250ms;
  -webkit-transform: translateZ(0) translateX(-100%);
  transform: translateZ(0) translateX(-100%);
  text-align:center;
  box-shadow: 0 0 20px #000000;
}

.active {
  transform: translateZ(0) translateX(0);
  transform: translateZ(0) translateX(0);
  -webkit-transition: 0.4s;
  transition: 0.4s;
}

h1 {
  margin-top:60%;
  font-size: 2.5em;
  cursor: default;
}

ul {
  padding:0;
  list-style:none;
  font-size:14px;
}

li {
  padding:10px 10px;
}

a {
  text-decoration:none;
  padding:10px 15px;
  color:#fff;
  font-family:"Roboto";
  font-size: 1.5em;
  font-weight: 300;
}

a:hover {
  text-decoration: line-through;
  color: aqua;
}

.content {
  position:relative;
  width:300px;
}

.button {
  width:50px;
  height:50px;
  margin:24% 36%;
  padding: 10px;
  cursor:pointer;
}

.line {
 width: 40px;
 height: 2px;
    background-color:#fff;
 transition: transform 0.3s ease, background 0.3s ease, opacity 0.3s ease, top 0.3s ease;
}

.line.first {
  transform: translateX(-10px) translateY(22px) rotate(-90deg);
}

.line.second {
  transform: translateX(-10px) translateY(19px) rotate(0deg);
}

.button.on .line.top {
 width: 40px;
 transform: translateX(-10px) translateY(20px) rotate(45deg);
}

.button.on .line.bottom {
 width: 40px;
 transform: translateX(-10px) translateY(17px)rotate(-45deg);
}

@keyframes fadein {
    from {
        opacity:0;
    }
    to {
        opacity:1;
    }
}
@-webkit-keyframes fadein { /* Safari and Chrome */
    from {
        opacity:0;
    }
    to {
        opacity:1;
    }
}

<!DOCTYPE html>

<html>
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1">
    
    <title>Home</title>
    
    <link href="https://fonts.googleapis.com/css?family=Source+Sans+Pro|Play|Raleway" rel="stylesheet">
    
    <link rel='stylesheet prefetch' href='http://maxcdn.bootstrapcdn.com/font-awesome/4.5.0/css/font-awesome.min.css'>
    
    <link rel="stylesheet" type="text/css" href="css/style.css">
</head> 
<body>
    
<div id="wrapper">
  <div class="menu">
      
    <h1>AL-SABA</h1>
      
    <ul>
       <div id="home"><li><a href="#home"><i class="fa fa-home"></i> home</a></li></div>
       <div id="about"><li><a href="#about"><i class="fa fa-user"></i> about</a></li></div>
       <div id="projects"><li><a href="#projects"><i class="fa fa-code"></i> projects</a></li></div>
       <div id="contact"><li><a href="#contact"><i class="fa fa-paper-plane"></i> contact</a></li></div>
    </ul>
  </div>
    
  <div class="content">
    <div class="button">
      <div class="line first top"></div>
      <div class="line second bottom"></div>
    </div>
  </div>
    
    <div id="aboutContent">
    
    </div>
    
    <div id="projectsContent">
    
    </div>
    
    <div id="contactContent">
    
    </div>
    
</div>
    
    <script src='http://cdnjs.cloudflare.com/ajax/libs/jquery/2.1.3/jquery.min.js'></script>
    <script src='http://cdnjs.cloudflare.com/ajax/libs/jqueryui/1.11.2/jquery-ui.min.js'></script>
    
    <script type="text/javascript" src="js/transition.js"></script>
    <script type="text/javascript" src="js/background.js"></script>
</body>
</html>

Answer 1

首先，您的内容元素 width 和 height 设置为 100%，您需要一个具有固定尺寸的父元素来获取百分比值。

您犯的另一个错误是在打开菜单时添加 click 处理程序。它会导致内存泄漏，因为您会在打开菜单时一遍又一遍地添加新的处理程序。

要淡入，您的元素必须先不可见。

我已经为你修复了关于按钮，其余的你可以用同样的方式完成。

//Menu
function expand() {
  $(this).toggleClass("on");
  $(".menu").toggleClass("active");
};
$(".button").on('click', expand);

//Page transition
$(function() {

  var bodyContent = $('#aboutContent')

  bodyContent.click(function(e) {
    if ($(e.target).hasClass('fa-times')) {
      $(this).fadeOut(400);
    } else if (!$(e.target).hasClass('fa')) {
      $(this).fadeOut(400);
    }
  });

  $('#about').click(function(ev) {
    bodyContent.fadeIn(400);
  });

});

body {
  background-color: black;
  font-family: "Source Sans Pro", sans-serif;
  color: #ccc;
  z-index: -100;
  background-color: black;
  overflow: hidden;
}

#aboutContent {
  width: 1000px;
  height: 1000px;
  background-color: #393939;
  z-index: 1000;
  display: none;
}

#projectsContent {
  width: 100%;
  height: 100%;
  background-color: #393939;
  z-index: 100;
}

#contactContent {
  width: 100%;
  height: 100%;
  background-color: #393939;
  z-index: 100;
}

.menu {
  position: absolute;
  top: 0;
  left: 0;
  bottom: 0;
  padding: 0;
  overflow: hidden;
  background: rgba(25, 25, 25, .5);
  width: 18%;
  box-sizing: border-box;
  transition: all 250ms;
  -webkit-transform: translateZ(0) translateX(-100%);
  transform: translateZ(0) translateX(-100%);
  text-align: center;
  box-shadow: 0 0 20px #000000;
}

.active {
  transform: translateZ(0) translateX(0);
  transform: translateZ(0) translateX(0);
  -webkit-transition: 0.4s;
  transition: 0.4s;
}

h1 {
  margin-top: 60%;
  font-size: 2.5em;
  cursor: default;
}

ul {
  padding: 0;
  list-style: none;
  font-size: 14px;
}

li {
  padding: 10px 10px;
}

a {
  text-decoration: none;
  padding: 10px 15px;
  color: #fff;
  font-family: "Roboto";
  font-size: 1.5em;
  font-weight: 300;
}

a:hover {
  text-decoration: line-through;
  color: aqua;
}

.content {
  position: relative;
  width: 300px;
}

.button {
  width: 50px;
  height: 50px;
  margin: 24% 36%;
  padding: 10px;
  cursor: pointer;
}

.line {
  width: 40px;
  height: 2px;
  background-color: #fff;
  transition: transform 0.3s ease, background 0.3s ease, opacity 0.3s ease, top 0.3s ease;
}

.line.first {
  transform: translateX(-10px) translateY(22px) rotate(-90deg);
}

.line.second {
  transform: translateX(-10px) translateY(19px) rotate(0deg);
}

.button.on .line.top {
  width: 40px;
  transform: translateX(-10px) translateY(20px) rotate(45deg);
}

.button.on .line.bottom {
  width: 40px;
  transform: translateX(-10px) translateY(17px)rotate(-45deg);
}

@keyframes fadein {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

@-webkit-keyframes fadein {
  /* Safari and Chrome */
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

<!DOCTYPE html>

<html>

<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">

  <title>Home</title>

  <link href="https://fonts.googleapis.com/css?family=Source+Sans+Pro|Play|Raleway" rel="stylesheet">

  <link rel='stylesheet prefetch' href='http://maxcdn.bootstrapcdn.com/font-awesome/4.5.0/css/font-awesome.min.css'>

  <link rel="stylesheet" type="text/css" href="css/style.css">
</head>

<body>

  <div id="wrapper">
    <div class="menu">

      <h1>AL-SABA</h1>

      <ul>
        <div id="home">
          <li><a href="#home"><i class="fa fa-home"></i> home</a></li>
        </div>
        <div id="about">
          <li><a href="#about"><i class="fa fa-user"></i> about</a></li>
        </div>
        <div id="projects">
          <li><a href="#projects"><i class="fa fa-code"></i> projects</a></li>
        </div>
        <div id="contact">
          <li><a href="#contact"><i class="fa fa-paper-plane"></i> contact</a></li>
        </div>
      </ul>
    </div>

    <div class="content">
      <div class="button">
        <div class="line first top"></div>
        <div class="line second bottom"></div>
      </div>
    </div>

    <div id="aboutContent">

    </div>

    <div id="projectsContent">

    </div>

    <div id="contactContent">

    </div>

  </div>

  <script src='http://cdnjs.cloudflare.com/ajax/libs/jquery/2.1.3/jquery.min.js'></script>
  <script src='http://cdnjs.cloudflare.com/ajax/libs/jqueryui/1.11.2/jquery-ui.min.js'></script>

  <script type="text/javascript" src="js/transition.js"></script>
  <script type="text/javascript" src="js/background.js"></script>
</body>

</html>

div 按下按钮时不淡入

div is not fading in when button is pressed

javascript

html

css

button

fade