如何更改活动按钮的颜色？

时间：2017-04-03 19:04:22

标签： javascript jquery html css button

所以我试图基本上改变当前活动颜色的按钮。我试图创建一个名为＆＃34; activePage＆＃34;的css类。并将其添加到单击任何按钮。但这没效果。

所以基本上如果你点击＆＃34;项目＆＃34;按钮它应该将该按钮的颜色更改为红色，如果您单击＆＃34;关于＆＃34;按钮它应该将该按钮更改为红色并更改＆＃34;项目＆＃34;按钮恢复原来的颜色。

＆＃13;
＆＃13; 
function homeTransition()
    {   
        $(this).toggleClass('activePage');
        
        if(document.getElementById("aboutContent").className.indexOf("slideInLeft") !== -1){
        document.getElementById("aboutContent").className = " animated slideOutLeft";
        }
        if(document.getElementById("projectsContent").className.indexOf("slideInLeft") !== -1){
        document.getElementById("projectsContent").className = " animated slideOutLeft";
        }
        if(document.getElementById("contactContent").className.indexOf("slideInLeft") !== -1){
        document.getElementById("contactContent").className = " animated slideOutLeft";
        }
        document.getElementById("astronaut").className = " animated fadeIn";
    }

function aboutTransition()
    {   
        document.getElementById("astronaut").className = " animated fadeOut";
        document.getElementById("aboutContent").className = "activePage animated slideInLeft";
        
        document.getElementById("projectsContent").className = " animated fadeOutLeft";
        document.getElementById("contactContent").className = " animated fadeOutLeft";
    }

function projectsTransition()
    {   
        $(this).toggleClass('activePage');
        
        document.getElementById("astronaut").className = " animated fadeOut";
        document.getElementById("projectsContent").className = "activePage animated slideInLeft";
        
        document.getElementById("aboutContent").className = " animated fadeOutLeft";
        document.getElementById("contactContent").className = " animated fadeOutLeft";
    }

function contactTransition()
    {
        $(this).toggleClass('activePage');
        
        document.getElementById("astronaut").className = " animated fadeOut";
        document.getElementById("contactContent").className = "activePage animated slideInLeft";
        
        document.getElementById("aboutContent").className = " animated fadeOutLeft";
        document.getElementById("projectsContent").className = " animated fadeOutLeft";
    }

//Menu
function expand(){
  $(this).toggleClass("on");
  $(".menu").toggleClass("active");
};
$(".button").on('click', expand);
＆＃13; 
body {
  font-family: "Source Sans Pro", sans-serif;
  color: #ccc;
  z-index: -100;
  background-color: black;
  overflow: hidden;
}

#aboutContent {
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  padding: 0;
  overflow: hidden;
  width: 100%;
  height: 100%;
  transition: all 250ms;
  -webkit-transform: translateZ(0) translateX(-100%);
  transform: translateZ(0) translateX(-100%);
  background-color: black;
  z-index: -1;
}

#projectsContent {
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  padding: 0;
  overflow: hidden;
  width: 100%;
  height: 100%;
  transition: all 250ms;
  -webkit-transform: translateZ(0) translateX(-100%);
  transform: translateZ(0) translateX(-100%);
  background-color: black;
  z-index: -1;
}

#contactContent {
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  padding: 0;
  overflow: hidden;
  width: 100%;
  height: 100%;
  transition: all 250ms;
  -webkit-transform: translateZ(0) translateX(-100%);
  transform: translateZ(0) translateX(-100%);
  background-color: black;
  z-index: -1;
}

.menu {
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  padding: 0;
  overflow: hidden;
  background: rgba(38, 139, 190, 0.84);
  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;
  color: #e5e5e5;
}

.activePage {
    color: red;
}

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

ul {
  padding:0;
  list-style:none;
  font-size:16px;
}

li {
  padding:10px 10px;
}

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

a:hover {
  color: #0dffec;
}

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

.button {
  width:20px;
  height:40px;
  margin:24% 36%;
  padding: 14px;
  cursor:pointer;
  transition: all .2s ease-in-out;
}

.button:hover {
  transform: scale(1.2);
}

.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 {
	transform: translateX(-10px) translateY(20px) rotate(45deg);
}

.button.on .line.bottom {
	transform: translateX(-10px) translateY(17px)rotate(-45deg);
}
＆＃13; 
<!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|Lato" 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">
    <link rel="stylesheet" type="text/css" href="css/animate.css">
</head> 
<body>
    
    <img id="astronaut" src="images/astronaut.png">
    
<div id="wrapper">
  <div class="menu">
      
    <h1>Title</h1>
      
    <ul>
       <div id="home" onclick="homeTransition()" class="noselect"><li><a href="#home"><i class="fa fa-home"></i> home</a></li></div>
       <div id="about" onclick="aboutTransition()" class="noselect"><li><a href="#about"><i class="fa fa-user"></i> about</a></li></div>
       <div id="projects" onclick="projectsTransition()" class="noselect"><li><a href="#projects"><i class="fa fa-code"></i> projects</a></li></div>
       <div id="contact" onclick="contactTransition()" class="noselect"><li><a href="#contact"><i class="fa fa-paper-plane"></i> contact</a></li></div>
    </ul>
  </div>
    
  <div class="content animated fadeInDown">
    <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>
＆＃13;
＆＃13;
＆＃13;

4 个答案:

答案 0 :(得分：1)

您的点击功能超出了jQuery的范围。

我剪掉了不相关的代码，所以不要只是复制和粘贴。

我更改HTML以便它不使用onClick，而绑定发生在jQuery的ready函数中。另外，我修改了CSS来定位实际负责文本样式的锚点。

请参阅我在下面的代码片段重构：

//Menu

$(function() {
  function expand() {
    $(this).toggleClass("on");
    $(".menu").toggleClass("active");
  };

  $('.noselect').click(function() {
    $('.noselect').removeClass('activePage');
    $(this).toggleClass('activePage');
  });

  $(".button").on('click', expand);
});
body {
  font-family: "Source Sans Pro", sans-serif;
  color: #ccc;
  z-index: -100;
  background-color: black;
  overflow: hidden;
}

#aboutContent {
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  padding: 0;
  overflow: hidden;
  width: 100%;
  height: 100%;
  transition: all 250ms;
  -webkit-transform: translateZ(0) translateX(-100%);
  transform: translateZ(0) translateX(-100%);
  background-color: black;
  z-index: -1;
}

#projectsContent {
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  padding: 0;
  overflow: hidden;
  width: 100%;
  height: 100%;
  transition: all 250ms;
  -webkit-transform: translateZ(0) translateX(-100%);
  transform: translateZ(0) translateX(-100%);
  background-color: black;
  z-index: -1;
}

#contactContent {
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  padding: 0;
  overflow: hidden;
  width: 100%;
  height: 100%;
  transition: all 250ms;
  -webkit-transform: translateZ(0) translateX(-100%);
  transform: translateZ(0) translateX(-100%);
  background-color: black;
  z-index: -1;
}

.menu {
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  padding: 0;
  overflow: hidden;
  background: rgba(38, 139, 190, 0.84);
  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;
  color: #e5e5e5;
}

.activePage {
  color: red;
}

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

ul {
  padding: 0;
  list-style: none;
  font-size: 16px;
}

li {
  padding: 10px 10px;
}

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

a:hover {
  color: #0dffec;
}

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

.button {
  width: 20px;
  height: 40px;
  margin: 24% 36%;
  padding: 14px;
  cursor: pointer;
  transition: all .2s ease-in-out;
}

.button:hover {
  transform: scale(1.2);
}

.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 {
  transform: translateX(-10px) translateY(20px) rotate(45deg);
}

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

.activePage a {
  color: red;
}
<!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|Lato" 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">
  <link rel="stylesheet" type="text/css" href="css/animate.css">
</head>

<body>

  <img id="astronaut" src="images/astronaut.png">

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

      <h1>Title</h1>

      <ul>
        <div id="home" class="noselect">
          <li><a href="#home"><i class="fa fa-home"></i> home</a></li>
        </div>
        <div id="about" class="noselect">
          <li><a href="#about"><i class="fa fa-user"></i> about</a></li>
        </div>
      </ul>
    </div>

    <div class="content animated fadeInDown">
      <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>

答案 1 :(得分：0)

有一个活跃的＆＃39; CSS中的属性，允许您更改元素的颜色和其他特征。

示例：

button:active{
    background:olive;
}

button:focus{
    background:olive;
}

希望这有帮助

答案 2 :(得分：0)

'home'变量在homeTransition中以及所有其他引用window对象的函数。

您可以通过以下方式修复代码：

将HTML中的onclick函数调用更改为：

<div id="home" onclick="homeTransition(event)"

通过在js文件中添加事件争论：

function homeTransition(event) {   
    $(event.target).toggleClass('activePage');

答案 3 :(得分：0)

<!DOCTYPE html>
<html>
<head>
<meta name="viewport" content="width=device-width, initial-scale=1">
<style>

.btn {
  border: none;
  outline: none;
  padding: 10px 16px;
  background-color: #f1f1f1;
  cursor: pointer;
  font-size: 18px;
}

.active, .btn:hover {
  background-color: #666;
  color: white;
}
</style>
</head>
<body>
<div id="myDIV">
  <button class="btn">1</button>
  <button class="btn active">2</button>
  <button class="btn">3</button>
  <button class="btn">4</button>
  <button class="btn">5</button>
</div>

<script>
// Add active class to the current button (highlight it)
var header = document.getElementById("myDIV");
var btns = header.getElementsByClassName("btn");
for (var i = 0; i < btns.length; i++) {
  btns[i].addEventListener("click", function() {
  var current = document.getElementsByClassName("active");
  current[0].className = current[0].className.replace(" active", "");
  this.className += " active";
  });
}
</script>

</body>
</html>
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