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Navigator Object

The Navigator object of JavaScript returns useful information about the visitor's browser and system.

Related Tutorials

• Using the navigator object to detect browser
• Using object detection to detect browser type

Properties

Your browser's navigator Information

Using some of the above properties, lets display some information about your browser, live:

Additional browsers' Navigator Information

Below shows you what the navigator object would return for some of the popular browsers/Operating System combinations out there:

Methods

Note: "[]" surrounding a parameter below means the parameter is optional.

Example 1- Detecting various versions of IE

<script type="text/javascript">
//note: userAgent in IE7 WinXP returns: Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1; .NET CLR 2.0.50727)

if (/MSIE (\d+\.\d+);/.test(navigator.userAgent)){ //test for MSIE x.x;
 var ieversion=new Number(RegExp.$1) // capture x.x portion and store as a number
 if (ieversion>=8)
  document.write("You're using IE8 or above")
 else if (ieversion>=7)
  document.write("You're using IE7.x")
 else if (ieversion>=6)
  document.write("You're using IE6.x")
 else if (ieversion>=5)
  document.write("You're using IE5.x")
}
else
 document.write("n/a")
</script>

Output:

Example 2- Detecting various versions of Firefox

<script type="text/javascript">
//Note: userAgent in FF2.0.0.13 WinXP returns: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.8.1.13) Gecko/20080311 Firefox/2.0.0.13

if (/Firefox[\/\s](\d+\.\d+)/.test(navigator.userAgent)){ //test for Firefox/x.x or Firefox x.x (ignoring remaining digits);
 var ffversion=new Number(RegExp.$1) // capture x.x portion and store as a number
 if (ffversion>=3)
  document.write("You're using FF 3.x or above")
 else if (ffversion>=2)
  document.write("You're using FF 2.x")
 else if (ffversion>=1)
  document.write("You're using FF 1.x")
}
else
 document.write("n/a")

</script>

Output:

Example 3- Detecting various versions of Opera

<script type="text/javascript">
//Note: userAgent in Opera9.24 WinXP returns: Opera/9.24 (Windows NT 5.1; U; en)
//         userAgent in Opera 8.5 (identified as IE) returns: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1) Opera 8.50 [en]
//         userAgent in Opera 8.5 (identified as Opera) returns: Opera/8.50 (Windows NT 5.1; U) [en]

if (/Opera[\/\s](\d+\.\d+)/.test(navigator.userAgent)){ //test for Opera/x.x or Opera x.x (ignoring remaining decimal places);
 var oprversion=new Number(RegExp.$1) // capture x.x portion and store as a number
 if (oprversion>=10)
  document.write("You're using Opera 10.x or above")
 else if (oprversion>=9)
  document.write("You're using Opera 9.x")
 else if (oprversion>=8)
  document.write("You're using Opera 8.x")
 else if (oprversion>=7)
  document.write("You're using Opera 7.x")
 else
  document.write("n/a")
}
else
 document.write("n/a")
</script>

Output: