Window.open - Features

// Optional: Auto-clean reference when closed const checkClosed = setInterval(() => if (popup.closed) clearInterval(checkClosed); if (window.popupRef === popup) window.popupRef = null;

// Use it const win = window.open('/help', 'HelpWindow', getCenteredFeatures(900, 650)); window.open features

Here’s a helpful, practical feature using window.open() with useful features — a that opens a centered, resizable, focused child window with safe defaults and a fallback for popup blockers. if (popup.closed) clearInterval(checkClosed)

if (!popup) // Popup blocked alert('Popup was blocked. Please allow popups for this site or click the link manually.'); return null; Here’s a helpful

const popup = window.open(url, title, features);

, 500);