Question

How can I add something in JavaScript that will check the web site URL of someone on a web site and then redirect to a certain page on the web site, if a match is found? For example…

The string we want to check for, will be mydirectory, so if someone went to example.com/mydirectory/anyfile.php or even example.com/mydirectory/index.php, JavaScript would then redirect their page / url to example.com/index.php because it has mydirectory in the url, otherwise if no match is found, don’t redirect, I’m using the code below:

var search2 = 'mydirectory';
var redirect2 = 'http://example.com/index.php'

if (document.URL.substr(search2) !== -1)
    document.location = redirect2

The problem with that, is that it always redirects for me even though there is no match found, does anyone know what’s going wrong and is there a faster / better way of doing this?

Answer 1

substr is not what you need in this situation, it extracts substrings out of a string. Instead use indexOf:

if(window.location.pathname.indexOf(search2) !== -1) {
    window.location = redirect2;
}

If possible it’s better to do this redirect on the server side. It will always work, be more search engine friendly and faster. If your users have JavaScript disabled, they won’t get redirected.