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Compatibility Data

MDN is working to make our browser compatibility data better. You should answer these 11 questions to let us know when and how you use compatibility data. Thanks!

1. Which sites do you regularly use to look up compatibility data:

MDN
www.browserscope.org
caniuse.com
html5test.com
mobilehtml5.org
www.quirksmode.org
docs.webplatform.org
www.w3schools.com
Other (Please tell us which other sites you use.) Please enter an 'other' value for this selection.

2. When you look up compatibility data are you typically:

Checking if a specific feature can be used in a specific project.
Debugging a problem.
Looking to see what new features are supported by a specific browser.
Looking to see what new features are broadly supported.
Other (Please tell us why else you look up compatibility data.) Please enter an 'other' value for this selection.

3. When working on a project are you typically developing for:

4. If you're working with a CSS feature which requires a vendor prefix do you:

Please enter an 'other' value for this selection.

5. If you're working with a JavaScript feature which requires a vendor prefix do you:

Please enter an 'other' value for this selection.

6. Who do you share information about compatibility with:

Clients
Supervisors
Colleagues
Students
I don't share information about compatibility.
Other (Please tell us who else you share information about compatibility with) Please enter an 'other' value for this selection.

How do you share information about compatibility data:

Short form social media (Twitter, Facebook, etc.)
Long form social media (Blog posts, forums, etc.)
Instant Messaging (DM, SMS, IRC, etc.)
Email
Project documentation
Code comments
Other Please enter an 'other' value for this selection.

When you share information about compatibility, what do you share?

A link to a site showing compatability data.
A copy of the compatability data.

7. Do your projects typically have explicitly stated browser compatibility requirements? (e.g. defined in a contract or service level agreement)

8. How often do you work on projects which require backwards compatibility?

9. How often do you refer to the W3C specifications for a feature?