Question

我正在尝试使用css和JavaScript制作导航栏，我的代码工作得很好，只需点击链接，胡佛外观保持活跃状态。有没有其他方法来实现这一点，因为我认为我的JavaScript代码不是很有效

<!DOCTYPE html>
<html lang="en">
    <head>
        <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
        <title></title>
        <link href="main.css" rel="stylesheet" type="text/css">
        <meta name="viewport" content="width=device-width, initial-scale=1.0">
        <script type="text/javascript">
            window.onload = function() {
                function clicka(num) {
                    console.log(num);
                    if(num == 1){
                        document.getElementById(num).className = 'active';  
                        document.getElementById('2').className = 'unactive'; 
                        document.getElementById('3').className = 'unactive'; 
                        document.getElementById('4').className = 'unactive'; 
                    }
                    else if(num == 2){
                        document.getElementById('1').className = 'unactive';  
                        document.getElementById(num).className = 'active'; 
                        document.getElementById('3').className = 'unactive'; 
                        document.getElementById('4').className = 'unactive'; 
                    }
                    else if(num == 3){
                        document.getElementById('1').className = 'unactive';  
                        document.getElementById('2').className = 'unactive'; 
                        document.getElementById(num).className = 'active'; 
                        document.getElementById('4').className = 'unactive'; 
                    }
                    else if(num == 4){
                        document.getElementById('1').className = 'unactive';  
                        document.getElementById('2').className = 'unactive'; 
                        document.getElementById('3').className = 'unactive'; 
                        document.getElementById(num).className = 'active'; 
                    }
                }
                var a = document.getElementById('click');
                var b = document.getElementById('click2');
                var c = document.getElementById('click3');
                var d = document.getElementById('click4');

                a.onclick = function(){
                    clicka('1');
                }
                b.onclick = function(){
                    clicka('2');
                }
                c.onclick = function(){
                    clicka('3');
                }
                d.onclick = function(){
                    clicka('4');
                }
            }
       </script>   
    </head>
    <body class="body">
        <header class="mainHeader">
            <img src="rrr.jpg">

            <nav><ul>
                    <li class="active" id="1"><a href="#" id="click">Home</a></li>
                    <li class="unactive" id="2"><a href="#" id="click2">About</a></li>
                    <li class="unactive" id="3"><a href="#" id="click3">Portfolio</a></li>
                    <li class="unactive" id="4"><a href="#" id="click4">Contact</a></li>
            </ul></nav>
        </header>




body{
    background-color:#F0F0F0 ;
    color:#000305;
    font-size: 87.5%;
    font-family: Arial,'Lucida Sans Unicode';
    line-height: 1.5;
    text-align: left;
}

a{
    text-decoration: none;
}

a:link, a:visited{

}

a:hover, a:active{

} 

.body{
    margin:0 auto;
    width:70%;
    clear:both;
}

.mainHeader img{
    width:30%; 
    height:auto;
    margin: 2% 0;
}

.mainHeader nav{
    background-color: #666;
    height: 40px;
    border-radius: 5px;
    -moz-border-radius: 5px;
    -webkit-border-radius: 5px;
}

.mainHeader nav ul{
    list-style: none;
    margin: 0 auto;
}

.mainHeader nav ul li{
    float: left;
    display: inline;
}

.mainHeader nav a:link, .mainHeader nav a:visited{
    color:#fff;
    display: inline-block;
    padding: 10px 25px;
    height: 20px;
}

.mainHeader nav a:hover, .mainHeader nav a:active,
.mainHeader nav .active a:link, .mainHeader nav .active a:visited{
    background-color: #cf5c3f;
    text-shadow: none;
}

.mainHeader nav ul li a{
     border-radius: 5px;
    -moz-border-radius: 5px;
    -webkit-border-radius: 5px;
}

Answer 1

试试这个：

function clicka(num) {
    var nav = document.getElementById('navbar'), c = nav.children, l = c.length, i;
    for( i=0; i<l; i++) c[i].className = "unactive";
    document.getElementById(num).className = "active";
}

// <ul id="navbar"><li...>...</li></ul>

更简单;）

如何在CSS或javascript中激活超链接导航栏？

1 个答案: