Implement window.location Location object #157

Description#

Replace the current window.location stub with a proper Location object per the WHATWG HTML spec. The Location object exposes URL components and provides navigation methods.

Requirements#

Properties (getters)#

• href — full URL string
• protocol — scheme + : (e.g., https:)
• host — hostname + port (e.g., example.com:8080)
• hostname — hostname only
• port — port string (empty if default)
• pathname — path (e.g., /page)
• search — query string including ?
• hash — fragment including #
• origin — scheme + host (read-only)

Setters#

• Setting href navigates to the new URL
• Setting pathname, search, hash, etc. navigates to the modified URL
• Setting hash alone should trigger fragment navigation (no page reload)

Methods#

• assign(url) — navigate to URL (adds history entry)
• replace(url) — navigate to URL (replaces current history entry)
• reload() — reload the current page
• toString() — returns href

Acceptance Criteria#

• All Location properties return correct URL components for the current page
• Setting location.href = '...' navigates to the new URL
• location.assign() navigates and adds a history entry
• location.replace() navigates without adding a history entry
• location.reload() re-fetches and re-renders the current page
• document.location is the same object as window.location
• Unit tests for all property getters and navigation methods