What does DOMContentLoaded mean?
The DOMContentLoaded event fires when the initial HTML document has been completely loaded and parsed, without waiting for stylesheets, images, and subframes to finish loading.
What happens before DOMContentLoaded?
DOMContentLoaded – the browser fully loaded HTML, and the DOM tree is built, but external resources like pictures and stylesheets may not yet have loaded. load – not only HTML is loaded, but also all the external resources: images, styles etc. beforeunload/unload – the user is leaving the page.
What is the difference between document load event and document DOMContentLoaded event?
The DOMContentLoaded event fires when parsing of the current page is complete; the load event fires when all files have finished loading from all resources, including ads and images.
How does browser page life cycle sequence work?
Construction of Document Object Model(DOM) Construction of CSS object model(CSSOM) Construction of Render Tree….1. Constructing the DOM object.
- You receive the page as bytes. Your browser converts it to text.
- Text is converted to nodes.
- nodes are converted to “objects”
- Construction of the tree, called the DOM TREE.
How do I know if I am DOMContentLoaded?
If you want to know “exactly” if DOMContentLoaded was fired, you could use a boolean flag like this: var loaded=false; document. addEventListener(‘DOMContentLoaded’,function(){ loaded=true; }
Is DOMContentLoaded needed?
No you don’t. Unless you need to wait for other scripts to load first.
How is DOM created?
A DOM tree starts from the topmost element which is html element and branches out as per the occurrence and nesting of HTML elements in the document. Whenever an HTML element is found, it creates a DOM node (Node) object from its respective class (constructor function).
What is DOMContentLoaded Chrome?
DOMContentLoaded indicates when the browser has finished parsing the document (but other resources such as images and stylesheets may/may not have been downloaded). It is represented as a blue line. The load event fired will occur once all the initial resources (images, stylesheets, JavaScript) have been downloaded.
On what event target should we listen for the DOMContentLoaded event?
The original target for this event is the Document that has loaded. You can listen for this event on the Window interface to handle it in the capture or bubbling phases.
What is a DOMContentLoaded event?
Window: DOMContentLoaded event The DOMContentLoaded event fires when the initial HTML document has been completely loaded and parsed, without waiting for stylesheets, images, and subframes to finish loading. The original target for this event is the Document that has loaded.
Does DOMContentLoaded work in IE6+?
The following code ports the functionality of the DOMContentLoaded event all the way back to IE6+, with a fallback to window.onload that works everywhere.
How do I listen for DOMContentLoaded?
You can listen for this event on the Window interface to handle it in the capture or bubbling phases. For full details on this event please see the page on the Document: DOMContentLoaded event. A different event, load, should be used only to detect a fully-loaded page.