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- #Final draft 9 compatibility code#
- #Final draft 9 compatibility license#
- #Final draft 9 compatibility free#
To watch for intersection relative to the device's viewport, specify null for root option. Typically, you'll want to watch for intersection changes with regard to the target element's closest scrollable ancestor, or, if the target element isn't a descendant of a scrollable element, the device's viewport. The first time the observer is initially asked to watch a target element.That specified element is called the root element or root for the purposes of the Intersection Observer API. A target element intersects either the device's viewport or a specified element.The Intersection Observer API allows you to configure a callback that is called when either of these circumstances occur: One thing the Intersection Observer API can't tell you: the exact number of pixels that overlap or specifically which ones they are however, it covers the much more common use case of "If they intersect by somewhere around N%, I need to do something." Intersection observer concepts and usage
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#Final draft 9 compatibility free#
This way, sites no longer need to do anything on the main thread to watch for this kind of element intersection, and the browser is free to optimize the management of intersections as it sees fit.
#Final draft 9 compatibility code#
The Intersection Observer API lets code register a callback function that is executed whenever an element they wish to monitor enters or exits another element (or the viewport), or when the amount by which the two intersect changes by a requested amount. As the user scrolls the page, these intersection detection routines are firing constantly during the scroll handling code, resulting in an experience that leaves the user frustrated with the browser, the web site, and their computer. The author of the web site may not even realize this is happening, since they may know very little about the inner workings of the two libraries they are using. Each of these has its own intersection detection routines, all running on the main thread. It uses a vendor-provided library to manage the advertisements placed periodically throughout the page, has animated graphics here and there, and uses a custom library that draws notification boxes and the like. When a site is loaded with these tests, things can get downright ugly.Ĭonsider a web page that uses infinite scrolling. Since all this code runs on the main thread, even one of these can cause performance problems. Implementing intersection detection in the past involved event handlers and loops calling methods like Element.getBoundingClientRect() to build up the needed information for every element affected.
#Final draft 9 compatibility license#
The Food and Drug Administration (FDA) has developed this guidance document to recommend information that should be provided in a premarket submission (i.e., premarket approval (PMA) application, humanitarian device exemption (HDE), biologics license application (BLA), premarket notification (510(k)) submission, investigational device exemption (IDE) and De Novo request) to demonstrate electromagnetic compatibility (EMC) for electrically powered medical devices and medical devices with electrical or electronic functions. Center for Biologics Evaluation and Research