Determine Blogger Page Type From JavaScript Using Template Codes

You can check the Blogger page type (index, item or archive) from JavaScript by adding this template code to the head section of your Blogger template:

<script type="text/javascript">
  var blog_pageType = "<data:blog.pageType/>" ;
</script>

You can then use the blog_pageType variable in your JavaScript whether it is inside the template code or a blog post:

<script type="text/javascript">
  switch ( blog_pageType )
  {
    case "index":
      document.write( "<p>Main Page</p>" );
      break;
    case "item":
      document.write( "<p>Blog Post</p>" );
      break;
    case "archive":
      document.write( "<p>Archive Page</p>" );
      break;
  }
</script>

Simple, neat and effective.