Software-update: Google Chrome 73.0.3683.75

Google Chrome logo (80 pix) Google heeft versie 73 van zijn webbrowser Chrome uitgebracht. Google Chrome is beschikbaar voor Windows, Linux en macOS. Er zijn ook versies voor Android en iOS, maar die volgen een iets ander releaseschema. Sinds versie 50 is de ondersteuning voor oudere versies van Windows en macOS vervallen. De belangrijkste veranderingen in versie 73, naast de gebruikelijke bug- en security fixes, zijn hieronder voor je op een rijtje gezet.

Constructable stylesheets
It's long been possible to dynamically create a stylesheet by attaching it directly to a <style> element's sheet property. This comes with problems including a flash of unstyled content and sometimes the bloat of duplicate CSS rules. New methods on the CSSStyleSheet interface add a programmatic way to add stylesheets, eliminating the old method's problems. Constructable stylesheets let you define shared CSS styles and apply them to multiple shadow roots or to the document object. This is referred to as adopting. Updates to a shared style sheet are applied everywhere it's been adopted. Adopting a stylesheet is fast. Constructable stylesheets are useful in many use cases including theme sharing between components, preloading stylesheets without DOM injection, and more. Instead of a new API, stylesheets are constructed imperatively with the replace() and replaceSync() methods. To learn more, check out our article or try the sample.

A new regular expression matching method is being added to String.prototype. The matchAll() function provides a more complete set of matches than String.prototype.match() does. Calling string.match(regex) returns an array that contains only complete matches, in this case 'test1' and 'test2'. What about those capturing groups? I can get the first set, those related to 'test1' if I remove the g flag. Getting the rest currently requires writing additional code. It would be nice if I didn't need to. The specification authors reached the same conclusion and created matchAll(), which has just landed in Chrome. And instead of returning the limited results just described, matchAll() returns an iterable object and contains a few convenience properties. To learn more about this method read our article on For more about what's new in JavaScript for Chrome, head over to

Passive Mousewheel listeners
Scrolling responsiveness is important enough to user engagement that Chrome has been working to improve scrolling through event behavior. A best practice for event listeners is that if they don't call preventDefault(), then they need to be registered as passive (by passing {passive: true} to addEVentListener()). Non-passive events are blocking since the browser has to wait for them to finish in case preventDefault() was called. Unnecessarily blocking event listeners happen often enough that in Chrome 56, we changed touchstart and touchmove that are registered on root targets to be passive by default. This allows the browser to safely perform scrolling and zooming without being blocked on listeners. Starting in Chrome 73, the wheel and mousewheel event listeners behave the same way, making the following lines of code equivalent:
window.addEventListener("wheel", func);
window.addEventListener("wheel", func, {passive: true} );
For more background and a few stats on change, read Making wheel events passive by default.
Cross-Origin resource policy
Cross-Origin-Resource-Policy response header allows http servers to ask the browser to prevent cross-origin or cross-site embedding of the returned resource. This is complementary to the Cross-Origin Read Blocking feature and is especially valuable for resources not covered by CORB (which only protects HTML, XML and JSON). Cross-Origin-Resource-Policy is currently the only way to protect images against Spectre attacks or against compromised renderers. CSS redirects are cross-origin To align with the specification, stylesheets that (a) failed to load due to network error, or (b) loaded via a redirect from cross-origin back to same-origin are considered cross-origin.

document.visibilityState set to “hidden” when WebContents is occluded
Thanks to the WebContents Occlusion feature in Chromium, the Page Visibility API will now accurately reflect the visibility state of web pages, especially when they are occluded. In other words, the document.visibilityState value will be “hidden” when the browser tab or window is covered by one or more window. The WebContents Occlusion feature is supported only on Chrome OS and macOS at this time. Windows support is in progress.

The scaleNonUniform() function post-multiplies a non-uniform scale transformation on the current matrix and returns the resulting matrix. It is being re-added to support legacy compatibility with SVGMatrix. Non-uniform scaling is a transformation in which at least one of the scaling factors is different from the others. For example, non-uniform scaling might turn a rectangle into a square or a parallelogram.

EME extension: HDCP policy check
Applications now have the ability to query whether a certain HDCP policy can be enforced so that playback can be started at the optimum resolution for the best user experience. A sample is available for developers who want to try it.

GamePad API: GamepadButton touched attribute
The GamePad API now provides the touched state of a gamepad button, which indicates whether a finger is on a button independent of whether it's being pressed.

imagesrcset and imagesizes attributes on link rel=preload
The <link> element now supports imagesrcset and imagesizes properties to correspond to srcset and sizes attributes of HTMLImageElement. To use them, the <link> element must include the preload and image keywords as shown below.
<link rel="preload" as="image" rel="external" href="pic400.jpg" imagesizes="100vw"
imagesrcset="pic400.jpg 400w, pic800.jpg 800w, pic1600.jpg 1600w">
Implicit root scroller Implicit root scroller allows viewport-filling scrollers (iframes, divs) to perform document-level scrolling, i.e. show/hide URL bar, overscroll glow, rotation anchoring, etc.. This feature doesn't have an API so it's not on a standards track. Chrome will try to determine if a page is mainly contained in a non-document scroller and attempt to delegate its document-scrolling-UX to that scroller. This is an implicit version of the previously proposed rootScrollers API.

::part pseudo element on shadow hosts
Chrome now supports the ::part() pseudo-element on shadow hosts, allowing shadow hosts to selectively expose chosen elements from their shadow tree to the outside page for styling purposes.

PerformanceObserver.supportedEntryTypes PerformanceObserver.supportedEntryTypes provides a way to feature-detect the PerformanceEntry types that are implemented in a web browser. For example, a developer running this in Chrome could get something like this in the console:
["longtask", "mark", "measure", "navigation", "paint", "resource"]
Use the response URL as the base URL for CSS and XSLT stylesheets
On the web, URLs are usually relative to the document's base URL. That means, if the page is /hello/ and contains <img src="world.jpg">, the image is loaded from /hello/world.jpg. There are a couple of exceptions to this, the most common of which is CSS. Within stylesheets, URLs (e.g. for background images) are relative to the stylesheet's "response URL". The "response" distinction is important. If the page contains <link rel="stylesheet" rel="external" href="/styles.css">, and /styles.css redirects to /foo/styles.css, URLs in the stylesheet will be relative to /foo/styles.css. In this case the request URL is different to the response URL, and it's the response URL that's used as the base URL. With a service worker in the middle, Chrome didn't handle this correctly. It would use the request URL as the base URL for CSS. This is fixed in Chrome 73. Chrome will correctly use the response URL. This change applies to the following resource types: XHR: Use the response URL for responseURL and documents
XHR's responseURL property should provide the URL of the response. In many cases, the request and response URLs are the same, but service workers can choose to return a response from elsewhere. Redirects also cause the request and response URLs to be different. If the XHR request was intercepted by a service worker, Chrome would incorrectly set responseURL to the request URL. This is fixed in Chrome 73. Chrome will correctly set responseURL to the response URL.
A boolean property has been added to RTCConfiguration.offerExtmapAllowMixed() to enable the extmap-allow-mixed attribute in a session description protocol (SDP) offer. The SDP attribute extmap-allow-mixed, as defined in RFC8285, will be included in the SDP offer if this property is set to true. The SDP attribute extmap-allow-mixed is supported from Chrome 71, but due to backwards compatibility problems it was not included in the SDP offer by default. This property is purely transitional. Initially it will be off by default. We hope to change the default to on when enough clients have updated their code. We hope that eventually backwards compatibility will not be needed and we can remove it completely.

The new RTCRtpReceiver.getParameters() method returns the RTCRtpReceiver object's track decoding parameters, which includes the codec and RTP header lists negotiated for the call, the RTCP information, and the layer count. This method is an analog to RTCRtpSender.getParameters() and presents similar information for a call, but on the receiver side. It does not allow modification of the call's parameters.

The new RTCRtpReceiver.getSynchronizationSources() method returns the latest playout timestamps of RTP packets for audio and video receivers. This is useful for determining in real time which streams are active, such as for the use case of audio meters or prioritizing displaying active participant streams in the UI.

Turn RTCRtpContributingSource from an interface into a dictionary
The specification requires RTCRtpContributingSource to be a dictionary, but it was previously shipped as an interface. With this change RTCRtpContributingSource will no longer have a prototype and getContributingSources() will create a new set of objects with each call.

Rename Atomics.wake() to Atomics.notify()
The Atomics.wake() method is being renamed Atomics.notify(). This is a low-level function to wake a Worker that has been suspended via Atomics.wait(). This conforms to a specification change made to alleviate confusion created by the similarity of the names wait and wake.

Transform list interpolation
Chrome has improved how CSS transforms are handled to reduce cases where a matrix interpolation fallback is used. An interpolation is an intermediate transformation. Sometimes interpretation of the CSS rule requires falling back to a matrix to accomplish the interpolation, and this can produce visual results other than what the web developer intends. To mitigate this, the specification was changed to reduce the number of situations when this can occur.

Interoperability improvements Spec-compliant shadow blur-radius
Historically, Blink's blur-radius interpretation has been at odds with both the CSS and Canvas2D specifications in that Blink shadows cover about half the expected area. With this change Gaussian blur sigma is now computed as one-half the blur-radius, as mandated by the specification. Blink's shadow implementation now matches FireFox and Safari.

Remove isomorphic decoding of URL fragment identifier
When Chrome opens a URL with a fragment id, it decodes %xx and applies isomorphic-decode to it, then tries to find an element with the decoding result as an ID in some cases. For example, if a user opens, Chrome does the following:
  1. It searches the page for an element with id="%F8%C0".
  2. If it’s not found, it searches the page for an element with id="&#xF8;&#xC0;".
No other browsers do this, and it's not defined by the standard. Starting in version 73, Chrome no longer does this either.

Deprecations, and Removals Remove EXPLAIN and REINDEX support in WebSQL
The output ofEXPLAIN is not guaranteed to be stable over SQLite versions, so developers cannot rely on it. REINDEX is only useful when collation sequence definitions change, and Chrome only uses the built-in collation sequences. Both features are now removed.

Deprecate 'drive-by downloads' in sandboxed iframes
Chrome has deprecated downloads in sandboxed iframes that lack a user gesture ('drive-by downloads'), though this restriction could be lifted via an allow-downloads-without-user-activation keyword in the sandbox attribute list. This allows content providers to restrict malicious or abusive downloads. Downloads can bring security vulnerabilities to a system. Even though additional security checks are done in Chrome and the operating system, we feel blocking downloads in sandboxed iframes also fits the general thought behind the sandbox. Apart from security concerns, it would be a more pleasant user experience for a click to trigger a download on the same page, compared with downloads started automatically when landing at a new page, or started non-spontaneously after the click. Removal is expected in Chrome 74.

Versienummer 73.0.3683.75
Releasestatus Final
Besturingssystemen Windows 7, Linux, macOS, Windows Vista, Windows Server 2008, Windows Server 2012, Windows 8, Windows 10, Windows Server 2016
Website Google
Licentietype Freeware

Reacties (15)

Wijzig sortering
Het stoort mij nog het meeste dat je bij Firefox een pdf bijv. kan openen waarbij hij de pdf opslaat in een temp map. Na opnieuw opstarten o.i.d. is deze map weer leeg. Bij Chrome moet je het bestand zelf ergens opslaan en handmatig ook weer verwijderen. Wij hebben Chrome op onze server staan op het werk, medewerkers verwijderen deze bestanden niet waardoor er een hoop vervuiling komt. Weet iemand of Chrome deze functie weer terugkrijgt? Googlen brengt geen positief resultaat helaas.
Bij Chrome > Instellingen > Downloads kun je de instelling 'Voorafgaand aan een download vragen waar een bestand moet worden opgeslagen' aanpassen naar wens. Heb je hier iets aan?
Bedankt maar die oplossing ken ik al. Bij ons is het vaak echter een bestand openen. Weer sluiten en mogelijk dezelfde middag of de volgende dag hetzelfde ritueel. Met name product informaties die op een intranet staan. Wellicht hebben wij dit als enige.
Geen oplossing maar een workaround, wellicht kan je een Windows Scheduled Task inrichten die periodiek die map leeggooit, bijvoorbeeld 's nachts als er toch niemand gebruik van maakt.
Bedankt voor de tip, daar heb ik nog niet aan gedacht. Ik ga het proberen !
Waarom gebruik je dan niet Firefox? Daar zijn, naast de door jou genoemde, nog meer redenen voor...
Bedankt, leuk leesvoer. Op mijn eigen PC gebruik ik wel Firefox. 95% is echter thinclient en gebruikt Chrome van de server. Weet niet of Firefox goed is om op een server te installeren. Zal er eens naar kijken.
Heb je al gekeken naar:
Chrome -> Settings -> Advanced settings openklappen -> Content Settings -> PDF Documents -> Download PDF files instead of automatically opening them in Chrome uitzetten.
Ja dat staat momenteel ook aan, echter werkt dit niet 100%. Het kan ook liggen aan de pagina waar op de pdf link geklikt wordt. Soms opent hij de pdf, soms vraagt hij om opslaan...
Met Firefox is het veel simpeler. Klikken, kiezen voor openen of opslaan, klaar. Openen is opslaan in temp en openen. Opslaan is uiteraard opslaan.
Helpt dit?
Open PDFs in Chrome
On your computer, open Chrome.
At the top right, click More Settings.
At the bottom, click Advanced.
Under "Privacy and security," click Content settings.
Near the bottom, click PDF documents.
Turn off Download PDF files instead of automatically opening them in Chrome.

[Reactie gewijzigd door Cluefull op 13 maart 2019 16:31]

Dark Mode is nu ook beschikbaar samen met laatste update, enkel op Mac.
Blijft zonde dat ze het 3d effect uit het logo hebben gehaald, en het strakke, blauwe design de nek om hebben gedraaid. Ik ben best wel benieuwd naar de psychologische effecten van grijstinten t.o.v. blauw in een interface die lange tijd in je zichtsveld is. Het zou jammer zijn als design trends en de persoonlijke voorkeur van designers niet ondergeschikt zouden zijn aan de gebruikerservaring. Ik probeer zelf iniedergeval mijn interfaces lekker kleurrijk en vrolijk te houden, omdat het op mij wel een positief effect heeft.
Het zou jammer zijn als design trends en de persoonlijke voorkeur van designers niet ondergeschikt zouden zijn aan de gebruikerservaring.
Volgens mij bedoel je deze dubbele ontkenning niet ;)
Ah ja, scherp! Dubbele ontkenningen kunnen best lastig zijn zonder koffie in het systeem :+

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