要猎取无关网页当前运转的涉猎器的疑息，请利用内置导航器东西。你否以对于该东西应用种种 Navigator 办法以及属性。
事例
你否以测验考试运转下列代码以正在 JavaScript 外完成 Navigator 器材 -
<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>
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