// Navigate to a new page (adds to history)
location.href = '/new-page';         // Same as setting location.href
location.assign('/new-page');        // Equivalent to setting href

// Navigate without adding to history
location.replace('/new-page');       // Replaces current history entry

// Reload
location.reload();                   // Reload from cache
location.reload(true);               // Force reload from server (deprecated)

// assign — user can go back to current page
location.assign('/page1');

// replace — current page is removed from history
// User CANNOT go back
location.replace('/page2');