How can I tell if a user is on index.html?
Question
I use document.URL to detect if a user is on index.html:
if(document.URL.indexOf("index") >-1) return true;
But if the user types "mydomain.com" or "mydomain.com/" then the test returns false.
I could try:
if(document.URL ==="http://myDomain.com") return true;
But I want to use this code on different domains. Any suggestions?
4 answers
solution1
10 ACCPTED 2012-01-24 15:57:55
There are so many permutations of URL that could mean that a user is on index.html . Instead could you not put a var within that file:
<script type="text/javascript">
on_index = true;
</script>
Just check if on_index is not undefined and is true. That'll be accurate 100% of the time.
solution2
5 2012-01-24 15:58:41
javascript Location object has many useful properties, in particular, you can examine location.pathname .
Basically, you're on the "index" page if the pathname is 1) empty 2) is equal to a slash / 3) starts with index or /index .
var p = window.location.pathname;
if (p.length === 0 || p === "/" || p.match(/^\/?index/))
alert ("on the index page!")
See Javascript .pathname IE quirk? for the discussion of leading slash issues.
solution3
2 2012-01-24 15:59:30
You could use
if (document.location.pathname === '/' ||
document.location.pathname.indexOf('index') >-1 ) {
return true;
}
If you have access to the actual page and not just the script then you should follow @Ben Everard's advice.
Just make sure you include the snippet he proposes before your script..
solution4
2 2012-01-24 16:02:32
There isn't a direct link between files and URLs. Additionally, index.html does not need to be in the site's root and the default page does not need to be index.html .
If you want a generic solution, you're probably out of luck. If you want a solution for your particular case, you can just provide that info from the page itself, eg defining an ID or class name:
<body class="index">
... or a JavaScript variable:
// Pick one
var page = 'index';
var isIndex = true;
If all you want is some simple string manipulation with current location, grab the pathname property of the window.location object:
// Untested
if( window.location.pathname=="/" || window.location.pathname=="/index.html" ){
}
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