When adding a phone number field to a form, it’s nice to format it (if it isn’t already). This doesn’t replace anything you would do to validate your form via Javascript. But it does create that little extra bit of uniformity, even if it is slightly redundant.
Building a custom HTML form for WordPress is something I do fairly regularly. When adding an upload form, it’s important to check for allowed file types. You wouldn’t want anyone uploading a malicious PHP script, right? Wouldn’t it be great if WordPress did that for you? Of course it would.
Bootstrap has a way making a lot of HTML elements look good, right off the bat. But the day finally came when I had to face to inevitable: The . This is the red headed stepchild of Bootstrap (and browser makers). Browsers render this element differently from each other, making it nearly impossible to look good across the board.