This post is more than 2 years old.
Just a quick tip I want to share with folks. I had a simple form field that included two fields for zip codes. Both used type="number". While testing in iOS6, I discovered that when I entered 02180 as a zip code, Safari "fixed" it by removing the 0 in front. Ok, I guess that makes sense, but it obviously wasn't helpful.
I switched the type to text and it fixed that issue, but it meant the keyboard display reverted to the normal text-based layout. Not a huge issue, but when I complained on Twitter, a few users chimed in with ideas.
Peter Daams (@daamsie) suggested this: <input type="text" pattern="[0-9]*">
I didn't think it was worthwhile to try this as it would still use the text keyboard. Or so I thought. Peter suggested trying it anyway so I did.
Surprisingly - iOS actually showed the numeric keyboard. I'm not sure why - but it almost seems as if it realized that the pattern filter in place was - essentially - numbers only.
Unfortunately, it did not work the same in Android. Peter suggested type="tel" as another workaround, but I left it as is. I find this behavior interesting though and I wanted to put this out there in case others had noticed it as well.