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Firefox for Web Developers

@FirefoxWebDevs • 90,162 subscribers

Official Firefox account for people who build on the web. Learn about the things we're working on to grow and improve the web platform.

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We're experimenting with a way to visualize session history in Firefox DevTools, and we'd love your feedback! Here's the background, and how to try it:

We're experimenting with a way to visualize session history in Firefox DevTools, and we'd love your feedback! Here's the background, and how to try it:

20,513 görüntüleme

AI Controls (formally 'kill switch') are landing in today's Firefox Nightly, and will land with Firefox 148 later this month.

AI Controls (formally 'kill switch') are landing in today's Firefox Nightly, and will land with Firefox 148 later this month.

38,629 görüntüleme

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Can you tell CSS from BS? Can you beat my score?
2:25
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Can you tell CSS from BS? Can you beat my score?

Firefox for Web Developers

37,208 görüntüleme • 3 ay önce

sizes="auto" landed in Firefox 150, making responsive images simpler and more reliable. Here's when you can use it, and how…
1:59
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sizes="auto" landed in Firefox 150, making responsive images simpler and more reliable. Here's when you can use it, and how…

Firefox for Web Developers

22,029 görüntüleme • 2 ay önce

CSS's light-dark() now accepts images, making it simpler to define alternate values for a dark color scheme. Here's how it works:
0:46
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CSS's light-dark() now accepts images, making it simpler to define alternate values for a dark color scheme. Here's how it works:

Firefox for Web Developers

19,777 görüntüleme • 2 ay önce

Ever struggled to get heading tags right in includes/components? headingoffset could be the answer…
2:14
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Ever struggled to get heading tags right in includes/components? headingoffset could be the answer…

Firefox for Web Developers

11,285 görüntüleme • 1 ay önce

CSS contrast-color is newly baseline, but it falls short in some areas. Here's how it works, and what to look out for:
1:28
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CSS contrast-color is newly baseline, but it falls short in some areas. Here's how it works, and what to look out for:

Firefox for Web Developers

17,114 görüntüleme • 3 ay önce

HTML invoker commands are newly baseline! Here's how they work…
1:20
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HTML invoker commands are newly baseline! Here's how they work…

Firefox for Web Developers

30,636 görüntüleme • 7 ay önce

JavaScript declarations in conditionals was discussed at TC39 recently, but consensus broke down over one key detail. How do you think it should behave?
2:11
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JavaScript declarations in conditionals was discussed at TC39 recently, but consensus broke down over one key detail. How do you think it should behave?

Firefox for Web Developers

30,662 görüntüleme • 7 ay önce

Out-of-order HTML patching, another proposal from TPAC, lets HTML be presented non-linearly, and a single file can update multiple parts of the page. Would this feature be useful to you?
2:18
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Out-of-order HTML patching, another proposal from TPAC, lets HTML be presented non-linearly, and a single file can update multiple parts of the page. Would this feature be useful to you?

Firefox for Web Developers

28,790 görüntüleme • 8 ay önce

We have Custom Elements, but do we also need Custom Attributes? This was discussed at TPAC. Is it something you'd like on the platform?
1:49
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We have Custom Elements, but do we also need Custom Attributes? This was discussed at TPAC. Is it something you'd like on the platform?

Firefox for Web Developers

23,782 görüntüleme • 7 ay önce

View Transition Types are newly baseline! These make it easier to build transitions that are specific to particular situations. Also, we have some new View Transition DevTools in Firefox 147…
1:33
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View Transition Types are newly baseline! These make it easier to build transitions that are specific to particular situations. Also, we have some new View Transition DevTools in Firefox 147…

Firefox for Web Developers

15,394 görüntüleme • 6 ay önce

JavaScript Iterator․zip landed in Firefox 148, making it simple to loop over multiple things at the same time. Here's how it works:
1:45
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JavaScript Iterator․zip landed in Firefox 148, making it simple to loop over multiple things at the same time. Here's how it works:

Firefox for Web Developers

11,958 görüntüleme • 4 ay önce

CSS shape() landed in Firefox 148. It's similar to path(), but allows the full expressiveness of CSS…
1:56
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CSS shape() landed in Firefox 148. It's similar to path(), but allows the full expressiveness of CSS…

Firefox for Web Developers

11,375 görüntüleme • 4 ay önce

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