要获取有关网页当前运行的浏览器的信息，请使用内置导航器对象。您可以对该对象使用各种 Navigator 方法和属性。
示例
您可以尝试运行以下代码以在 JavaScript 中实现 Navigator 对象 -
<html>
<head>
<title>Navigator Object Example</title>
</head>
<body>
<script>
<!--
var userAgent = navigator.userAgent;
var opera = (userAgent.indexOf('Opera') != -1);
var ie = (userAgent.indexOf('MSIE') != -1);
var gecko = (userAgent.indexOf('Gecko') != -1);
var netscape = (userAgent.indexOf('Mozilla') != -1);
var version = navigator.appVersion;
if (opera) {
document.write("Opera based browser");
// Keep your opera specific URL here.
}
else if (gecko) {
document.write("Mozilla based browser");
// Keep your gecko specific URL here.
}
else if (ie) {
document.write("IE based browser");
// Keep your IE specific URL here.
}
else if (netscape) {
document.write("netscape based browser");
// Keep your netscape specific URL here.
} else {
document.write("UnkNown browser");
}
// You can include version to along with any above condition.
document.write("<br /> browser version info : " + version );
//-->
</script>
</body>
</html>
