In this window, click HTML Application for TypeScript under Visual C#. The onload property processes load events after the element has finished loading. If no frame nor window has the name "WikipediaWindowName", then the browser will create a new window and name it "WikipediaWindowName". It will run the function as soon as the webpage has been loaded. The load event is fired when the whole page has loaded, including all dependent resources such as stylesheets, scripts, iframes, and images. Options Some of our partners may process your data as a part of their legitimate business interest without asking for consent. How can I explain to my manager that a project he wishes to undertake cannot be performed by the team? How to see the extensions loaded by PHP ? The onload event can also be used to deal with cookies (see "More Examples" below). Alternatively, the following example demonstrates how to open a popup, using the popup feature. To handle the load event, you register an event listener using the addEventListener() method: Or use the onload property of the window object: If you maintain a legacy system, you may find that the load event handler is registered in of the body element of the HTML document, like this: Its a good practice to use the addEventListener() method to assign the onload event handler whenever possible. How to run a function when the page is loaded in JavaScript ? Slide in an element when the user has scrolled down 350 pixels from the top of the page (add the slideUp class): window.onscroll = function() {myFunction ()}; function myFunction () { if (document.body.scrollTop > 350 || document.documentElement.scrollTop > 350) { document.getElementById("myImg").className = "slideUp"; } } Try it Yourself How to Draw a Semi-Circle using HTML and CSS ? To catch load events on the window, that load event must be dispatched directly to the window. ), which means that adding an event listener (or falling back to window.onload which, IMHO, is wonderfully simple even with its limitations) is still necessary, so the [old] question is still valid. Use window.onload function: It is used to perform the task as soon as the page refresh or loading. ang.component.html: you write "In general, however, I'd avoid assigning functions directly to onload in favour of using addEventListener" <-- why? The returned reference can be used to access properties and methods of the new window as long as it complies with the same-origin policy security requirements. Window.onload function we can use to perform some task as soon as the page finishes loading. LOADING - 1 - Data loading is in DONE - 2 - Data reading operation is successfully Result - FileReader.result returns the contents of the file and can only be used if the reading of the file is completed successfully. How do I dynamically assign properties to an object in TypeScript? ok sir.@akirus how to get database column id by using spring boot in angular 4 ? Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. Naturally, it has to wait for styles to load. The Window interface's open() method takes a URL as a parameter, and loads the resource it identifies into a new or existing tab or window. Step 2 After this session the project has been created; a new window is opened on the right side. A window for a given document can be obtained using the document.defaultView property. So DOMContentLoaded definitely happens after such scripts: In the example above, we first see Library loaded, and then DOM ready! (all scripts are executed). If you want to add more, just use addEventListener(), which is the preferred way for adding events. If a visitor initiated navigation away from the page or tries to close the window, the beforeunload handler asks for additional confirmation. There are cases when we are not sure whether the document is ready or not. If no parameter type is defined, TypeScript will default to using any, unless additional type information is available as shown in the Default Parameters and Type Alias sections . Is it a bug? Bulk update symbol size units from mm to map units in rule-based symbology. onload is most often used within the element to execute a script once I plan to develop rich Html/Js webresources with UCI lookalike controls. I want to get some info from an image that i load using new image() with typescript. In the next step function code() is declared inside of the