Hi Stephan, Thanks for your answer!
I think it's Javascript features and grammars that I should re-study. Thanks for your guide! 2009/8/17 Stephan Beal <sgb...@googlemail.com>: > > On Aug 17, 5:55 am, Jackwanzai <jackwan...@gmail.com> wrote: >> Hi all, >> >> I have been using JQuery for some time, finding it very interesting >> and elegant. >> >> I want to study the code source. But found I was confused by many >> code. > > To really understand what jQuery is and how it works, one must also > understand: > > A) What are HTML and the DOM? This include and understanding of its > structure, as well as what types of elements are used for what > purposes. jQuery is made for searching through and interacting with > DOM elements, and to understand how it does this, one must understand > the DOM. > > B) What is CSS, and how does it affect the HTML DOM? The "selectors" > which jQuery uses were largely derived from CSS standards/conventions, > and if one understands that then the selectors are easier to read and > understand. > > C) What is JavaScript (and what is the difference between the > JavaScript language and the DOM-defined JavaScript interface)? And how > can we use it to interact with the objects from point (A). Also, > understanding how closures and anonymous functions work in JS is > critical to using jQuery properly. e.g. learn to identify which object > "this" really points to. > > Don't try to understand jQuery simply be reading its source code (or > the code for plugins). jQuery does a lot of tricks which are confusing > to experienced JavaScript coders, and downright mystifying to > newcomers. First understand what problem jQuery is trying to solve, > then understanding jQuery should be a lot simpler. > -- You will still be here tomorrow, but your dream may not...
