Component on new window
Component on New Window
Opening a new window is a common requirement in web applications. Sometimes, we need to display a component or module in a new window. For example, if we want to show a preview of a document or an image, we might open it in a new window. In this case, we can create a new component and render it in the new window.
To open a new window, we can use the window.open()
method. This method creates a new browser window or tab and returns a reference to it. We can use this reference to interact with the new window.
Example
function openWindow() {
const url = 'https://example.com/preview';
const options = 'width=600,height=400,toolbar=no,location=no,status=no,menubar=no,scrollbars=yes,resizable=yes';
const win = window.open(url, '_blank', options);
const container = document.createElement('div');
container.id = 'preview-container';
win.document.body.appendChild(container);
ReactDOM.render(<Preview />, container);
}
- We create a function named
openWindow
that will be called when the user clicks on a button or link. - We define the URL of the page that we want to open in the new window.
- We define some options for the window, such as its dimensions and whether to show the toolbar, location bar, and other elements.
- We call
window.open
with the URL, a target (in this case,_blank
to open in a new tab or window), and the options. - We create a new
div
element with an ID ofpreview-container
. - We append the
div
element to the new window'sbody
element. - We use
ReactDOM.render
to render our<Preview />
component into thepreview-container
element.
We can then define our <Preview />
component as usual and it will be rendered in the new window.
Alternate Approach
Another approach is to use an iframe instead of a new window. This can be useful if we want to display a component inline on the page, but isolated from the rest of the page's styles and scripts.
<div id="preview-container"></div>
<iframe src="https://example.com/preview" id="preview-iframe"></iframe>
<script>
const container = document.getElementById('preview-container');
const iframe = document.getElementById('preview-iframe').contentWindow;
ReactDOM.render(<Preview />, container, () => {
const iframeDoc = iframe.document || iframe.contentDocument;
const preview = iframeDoc.getElementById('preview-container');
preview.appendChild(container.firstChild);
});
</script>
- We create a
<div>
element with an ID ofpreview-container
to hold our component. - We create an
<iframe>
element with asrc
attribute pointing to the URL of the page that we want to display. - We define a JavaScript block to handle rendering of our component in the
<div>
element and then moving it into the iframe's document. - We get a reference to the
<div>
element and the iframe'swindow
object. - We use
ReactDOM.render
to render our<Preview />
component into the<div>
element. - We wait for the rendering to finish by passing a callback function to
ReactDOM.render
. - Inside the callback function, we get a reference to the iframe's document (either as
iframe.document
oriframe.contentDocument
) and find the<div>
element with the ID ofpreview-container
. - We append the first child of our original
<div>
element (which should be our rendered component) to the<div>
element in the iframe.