jQuery's understandability is part of its superiority over MooTools. When I was first looking for a Javascript library years ago, it was better documented than other libraries, it was more readable (particularly method names), and didn't lean towards OOP (I admit I personally hated Java).
MooTools and other libraries might possibly be more powerful if you are developing in Javascript in general, but for web development I primarily care about DOM manipulation, and it was much easier to pick up jQuery than anything else at the time. It's a mistake to think that languages should win out simply based on functionality and capabilities, without taking into account things like ease of use and learning curve.
MooTools and other libraries might possibly be more powerful if you are developing in Javascript in general, but for web development I primarily care about DOM manipulation, and it was much easier to pick up jQuery than anything else at the time. It's a mistake to think that languages should win out simply based on functionality and capabilities, without taking into account things like ease of use and learning curve.