cross-domain-utils

import { getDomain, isSameDomain, getTop, getParent, isWindowClosed } from 'cross-domain-utils'; function setupIframe(url) { return new Promise(resolve => { const iframe = document.createElement('iframe'); iframe.src = url; iframe.onload = () => resolve(iframe); document.body.appendChild(iframe); }); } async function runExample() { const currentWindow = window; console.log(`Current window domain: ${getDomain(currentWindow)}`); // Simulate a same-domain iframe const sameDomainIframe = await setupIframe(window.location.href); const sameDomainWin = sameDomainIframe.contentWindow; console.log(`Same-domain iframe loaded. Domain: ${getDomain(sameDomainWin)}`); console.log(`Is same domain as current: ${isSameDomain(sameDomainWin)}`); console.log(`Iframe's parent: ${getParent(sameDomainWin) === currentWindow ? 'current window' : 'other'}`); // Simulate a cross-domain iframe (requires a different origin, e.g., a local server on another port) // For demonstration, we'll just illustrate the conceptual call, as actual cross-domain setup is complex. // Replace with a real cross-origin URL for actual testing. const crossDomainUrl = 'http://localhost:8081/other-page.html'; // Example, needs a running server const crossDomainIframe = await setupIframe(crossDomainUrl); const crossDomainWin = crossDomainIframe.contentWindow; // Accessing cross-domain properties directly would throw SecurityError. // cross-domain-utils handles this gracefully. console.log(` Attempting cross-domain checks...`); console.log(`Is cross-domain window closed: ${isWindowClosed(crossDomainWin)}`); // Safe check console.log(`Is cross-domain window on same domain: ${isSameDomain(crossDomainWin)}`); // Safe check try { getDomain(crossDomainWin); } catch (e) { console.warn(`getDomain on cross-domain window threw: ${e.message}`); // Expected behavior } const topWindow = getTop(currentWindow); console.log(`Top-level window is current window: ${topWindow === currentWindow}`); // Clean up iframes document.body.removeChild(sameDomainIframe); document.body.removeChild(crossDomainIframe); } runExample();