Question

I need to see if the current page a user is on is the main page of the website, i.e. there is nothing after the base url.

I’m doing this to exclude some code off the main page.

Answer 1

if (location.pathname=="/"){
  // at the root of the site
}

Read more on the (cross-browser) window.location object.

Edit: If your ‘root’ maybe served by some file named index (e.g. index.html, index.php, index.asp, etc.) you may want:

var rootPattern = /^\/(?:index\.[^.\/]+)?$/i;
if (rootPattern.test( location.pathname )){
  // …
}

or more explicitly:

switch(location.pathname){
  case '/':
  case '/index.html':
  case '/index.php':
  case '/index.asp':
    // …
}