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window.onload just runs when the browser gets to it. window.addEventListener waits for the window to be loaded before running it. In general you should do the second, but you should attach an event listener to it instead of defining the function.
The onload event occurs when an object has been loaded. onload is most often used within the <body> element to execute a script once a web page has completely loaded all content (including images, script files, CSS files, etc.).
26 lip 2024 · js. addEventListener("load", (event) => {}); onload = (event) => {}; Event type. A generic Event. Examples. Log a message when the page is fully loaded: js. window.addEventListener("load", (event) => { . console.log("page is fully loaded"); }); The same, but using the onload event handler property: js. window.onload = (event) => { .
26 lip 2024 · The load event fires for elements containing a resource when the resource has successfully loaded. Currently, the list of supported HTML elements are: <body>, <embed>, <iframe>, <img>, <link>, <object>, <script>, <style>, and <track>.
The load event occurs when the document has been completely loaded, including dependent resources like JavaScript files, CSS files, and images. The <img> and <script> elements also support the load event. Use the addEventListener() method to register an onload event handler.
1 kwi 2024 · The window.onload event in JavaScript is triggered when the entire webpage, including all its external resources such as images, stylesheets, and scripts, has finished loading. It allows you to execute a function or a block of code after the page has fully loaded.
14 paź 2022 · window.onload. The load event on the window object triggers when the whole page is loaded including styles, images and other resources. This event is available via the onload property. The example below correctly shows image sizes, because window.onload waits for all images:
