For example: The load event fires at the end of the document loading process. The target parameter determines which window or tab to load the resource into, and the windowFeatures parameter can be used to control to open a new popup with minimal UI features and control its size and position. The window.onload method is triggered when the page is entirely loaded on the browser (as well as all images, style, scripts, and CDN). Here is a quick fix for you You will also find that the general Event type doesn't have width and height, so you may need to specialise the type for that too. That may sound weird, but most browsers ignore event.preventDefault(). You can read more about it here simple example: export class Example implements OnInit { constructor () {} ngOnInit () { //code that will execute at the start of the loading process } } Share Follow answered Jan 2, 2018 at 8:58 How to see the extensions loaded by PHP ? Syntax open() open(url) open(url, target) open(url, target, windowFeatures) Parameters url Optional A string indicating the URL or path of the resource to be loaded. ERROR: CREATE MATERIALIZED VIEW WITH DATA cannot be executed from a function. For example: window.addEventListener ('load', function () { alert ('hello!'); }, false); Share Follow To handle the unload event, you can use the addEventListener () method: addEventListener ( 'unload', (event) => { console .log ( 'The page is unloaded' ); }); Code language: JavaScript (javascript) Or assign an event handler to the onunload property of the window object: window .onunload = (event) => { console .log ( 'The page is unloaded' ); }; It assigns an onload event handler to check if the app.js has been fully loaded. Do roots of these polynomials approach the negative of the Euler-Mascheroni constant? The unload event is fired when the document or a child resource is being unloaded. window.onload" combine;" window.onload" combine"" autoExpand"" postToHype" onmouseover" postToHype"" window.onload" The lifecycle of an HTML page has three important events: Lets explore the details of these events. window.onload just runs when the browser gets to it. The default message that appears in the confirmation box, is different in different browsers. Which attribute is used to specify an alternate text for an image, if the image is not loaded properly in HTML ? Copyright 2022 by JavaScript Tutorial Website. If you would like to change your settings or withdraw consent at any time, the link to do so is in our privacy policy accessible from our home page.. When the browser processes an HTML-document and comes across a