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Renan Valentin
f00be84b81
MDN has a list of methods for obtaining the window reference of an iframe: https://developer.mozilla.org/en-US/docs/Web/API/Window/postMessage#Syntax fix(react-dom): check if iframe belongs to the same origin Accessing the contentDocument of a HTMLIframeElement can cause the browser to throw, e.g. if it has a cross-origin src attribute. Safari will show an error in the console when the access results in "Blocked a frame with origin". e.g: ```javascript try { $0.contentDocument.defaultView } catch (err) { console.log('err', err) } > Blocked a frame with origin X from accessing a frame with origin Y. Protocols, domains, and ports must match. > err – TypeError: null is not an object (evaluating '$0.contentDocument.defaultView') ``` A safety way is to access one of the cross origin properties: Window or Location Which might result in "SecurityError" DOM Exception and it is compatible to Safari. ```javascript try { $0.contentWindow.location.href } catch (err) { console.log('err', err) } > err – SecurityError: Blocked a frame with origin "http://localhost:3001" from accessing a cross-origin frame. Protocols, domains, and ports must match. ``` https://html.spec.whatwg.org/multipage/browsers.html#integration-with-idl
react-dom
This package serves as the entry point to the DOM and server renderers for React. It is intended to be paired with the generic React package, which is shipped as react to npm.
Installation
npm install react react-dom
Usage
In the browser
var React = require('react');
var ReactDOM = require('react-dom');
class MyComponent extends React.Component {
render() {
return <div>Hello World</div>;
}
}
ReactDOM.render(<MyComponent />, node);
On the server
var React = require('react');
var ReactDOMServer = require('react-dom/server');
class MyComponent extends React.Component {
render() {
return <div>Hello World</div>;
}
}
ReactDOMServer.renderToString(<MyComponent />);
API
react-dom
findDOMNoderenderunmountComponentAtNode
react-dom/server
renderToStringrenderToStaticMarkup