在我的 HTML 文件中,我创建了各种样式为 CSS 的下拉菜单。我无法解决的任务(除了我的 HTML 没有链接到我的外部 .css 文件)在 div id=nav 下,每个下拉选项应该使用一个 .js 启动不同的 java 脚本函数文件。
<!DOCTYPE html>
<html>
<head>
<link rel="stylesheet" href="m6a1.css">
<style>
ul {
list-style-type: none;
margin: 0;
padding: 0;
overflow: hidden;
background-color: #333;
}
li {
float: left;
}
li a, .dropbtn {
display: inline-block;
color: white;
text-align: center;
padding: 14px 16px;
text-decoration: none;
}
li a:hover, .dropdown:hover .dropbtn {
background-color: red;
}
li.dropdown {
display: inline-block;
}
.dropdown-content {
display: none;
position: absolute;
background-color: #f9f9f9;
min-width: 160px;
box-shadow: 0px 8px 16px 0px rgba(0,0,0,0.2);
z-index: 1;
}
.dropdown-content a {
color: black;
padding: 12px 16px;
text-decoration: none;
display: block;
text-align: left;
}
.dropdown-content a:hover {background-color: #f1f1f1;}
.dropdown:hover .dropdown-content {
display: block;
}
</style>
<title> HTML5</title>
</head>
<body>
<div id="nav">
<ul>
<li><a href="browser">Browser Test</a></li>
<li><a href="html">HTML Feature Test</a></li>
<li class="dropdown">
<a href="javascript:void(0)" class="dropbtn">Mobile Tests</a>
<div class="dropdown-content">
<a href="#">Screen Resolution</a>
<a href="#">Screen Orientation</a>
<li class="dropdown">
<a href="javascript:void(0)" class="dropbtn">Canvas Test</a>
<div class="dropdown-content">
<a href="#">General Support</a>
<a href="#">Text Support</a>
<a href="#">Draw Canvas</a>
</div>
</li>
</ul>
<div id="heading"></div>
<h1>Click a menu item
above to test various web features</h1>
<div id="output"></div>
<canvas id="myCanvas"></canvas>
</body>
</html>
我已经开始使用以下 js 代码来尝试获取请求的浏览器信息。我正试图通过获取其他信息来工作,但还没有接近完成的任何事情。我希望理解这第一部分将帮助我完成其余部分。
{document.getElementById("#").innerHTML = "navigator.appCodeName is " +
navigator.appCodeName;
}
{document.getElementById("#").innerHTML = "navigator.appVersion" +
navigator.appVersion;
}
{document.getElementById("#").innerHTML = "navigator.appName is " +
navigator.appName;
}
{document.getElementById("#").innerHTML =
"cookiesEnabled is " + navigator.cookieEnabled;
}
{document.getElementById("#").innerHTML = navigator.language;
}
{document.getElementById("#").innerHTML = navigator.platform;
}
{document.getElementById("#").innerHTML = navigator.userAgent;
}
谢谢大家的帮助