Chrome 80

Posted : admin On 1/29/2022

What are the newest features in Chrome version 80? ⇒ Become a channel member for exclusive features! Check it out here:

  1. Google Chrome (finally?) reduces memory and CPU drain. While a few days ago we were singing the praises of all the novelties of the latest version of Firefox, today it's the turn of its number 1 rival: version 57 of Google Chrome arrives with several new features, foremost among them a savings in the memory and CPU consumption.
  2. Chrome 80 comes packed with new features, including a great change that prevents sites from blasting you with spammy notification requests—which can now all be hidden under a button in your.
  3. As Chrome’s technical program manager Srinivas Sista revealed in a blog post, Chrome version 90.0.4430.85 comes with seven security fixes, one of which addresses a zero-day vulnerability that.

Support for let and class redeclarations in the Console #

The Console now supports redeclarations of let and class statements. The inability to redeclare was a common annoyance for web developers who use the Console to experiment with new JavaScript code.

Redeclaring a let or class statement in a script outside of the Console or within a single Console input will still cause a SyntaxError.

For example, previously, when redeclaring a local variable with let, the Console would throw an error:

Chrome version 80 download

Now, the Console allows the redeclaration:

Chromium issue #1004193

Improved WebAssembly debugging #

DevTools has started to support the DWARF Debugging Standard, which means increased support for stepping over code, setting breakpoints, and resolving stack traces in your source languages within DevTools. Check out Improved WebAssembly debugging in Chrome DevTools for the full story.

Network panel updates #

Request Initiator Chains in the Initiator tab #


You can now view the initiators and dependencies of a network request as a nested list. This can help you understand why a resource was requested, or what network activity a certain resource (such as a script) caused.

After logging network activity in the Network panel, click a resource and then go to the Initiator tab to view its Request Initiator Chain:

  • The inspected resource is bold. In the screenshot above, is the inspected resource.
  • The resources above the inspected resource are the initiators. In the screenshot above, is the initiator of In other words, caused the network request for
  • The resources below the inspected resource are the dependencies. In the screenshot above, is a dependency of In other words, caused the network request for

Initiator and dependency information can also be accessed by holding Shift and then hovering over network resources. See View initiators and dependencies.

Chromium issue #842488

Highlight the selected network request in the Overview #

After you click a network resource in order to inspect it, the Network panel now puts a blue border around that resource in the Overview. This can help you detect if the network request is happening earlier or later than expected.

Chromium issue #988253

URL and path columns in the Network panel #

Use the new Path and URL columns in the Network panel to see the absolute path or full URL of each network resource.

Right-click the Waterfall table header and select Path or URL to show the new columns.

Chromium issue #993366

Updated User-Agent strings #

Chrome 80s Bomber Plane


DevTools supports setting a custom User-Agent string through the Network Conditions tab. The User-Agent string affects the User-Agent HTTP header attached to network resources, and also the value of navigator.userAgent.

The predefined User-Agent strings have been updated to reflect modern browser versions.

To access Network Conditions, open the Command Menu and run the Show Network Conditions command.

You can also set User-Agent strings in Device Mode.

Chromium issue #1029031

Audits panel updates #

New configuration UI #

The configuration UI has a new, responsive design, and the throttling configuration options have been simplified. See Audits Panel Throttling for more information on the throttling UI changes.

Coverage tab updates #

Per-function or per-block coverage modes #

The Coverage tab has a new dropdown menu that lets you specify whether code coverage data should be collected per function or per block. Per block coverage is more detailed but also far more expensive to collect. DevTools uses per function coverage by default now.

You may see large code coverage differences in HTML files depending on whether you use per function or per block mode. When using per function mode, inline scripts in HTML files are treated as functions. If the script executes at all then DevTools will mark the entire script as used code. Only if the script doesn't execute at all will DevTools mark the script as unused code.

Coverage must now be initiated by a page reload #

Chrome 80 Bugs

Toggling code coverage without a page reload has been removed because the coverage data was unreliable. For example, a function can be reported as unused if its execution was a long time ago and V8's garbage collector has cleaned it up.

Chromium issue #1004203

Chrome 80 And 81

Last updated: Improve article