Speed matters online. Study after study has shown that even 100 millisecond delays in load times negatively impact user experience and conversions. So it's no wonder that e-commerce experiences are particularly susceptible to performance as these recent bits of data illustrate.

Typing touch device 5-finger based from the 80ies

Clever ways to provide a sortable table with AJAX. Props to the no-JS fallback

Our participants were faster, more successful, less error-prone, and more satisfied when they used the forms with inline validation. Eye-tracking also showed that they “fixated” on the forms with inline validation less frequently and for less time, which shows that they found these forms easier to process visually than the forms without inline validation. This was likely because they didn’t have to reread the entire form after submitting it to resolve any errors—instead, they resolved errors as they went along.

"evil" design tricks

Just how useless is a chocolate teapot? Let's try science

Normally when you think of "bad design", you think of laziness or mistakes. These are known as design anti-patterns. Dark Patterns are different – they are not mistakes, they are carefully crafted with a solid understanding of human psychology, and they do not have the user’s interests in mind