See also the closely related concept of code smells. These are things that aren't necessarily wrong like anti-patterns are because in certain niche cases or in limited amounts they're fine, but they're often an indicator that you're doing something wrong in your code. As a quick example I looked up some code smells in JS and a couple of the examples were using == instead of === and having deeply nested/indented code (E.G. have if blocks inside of if blocks inside of if blocks inside of a for loop).