1. 极为重要的reference: [1] How selections works. http://bost.ocks.org/mike/selection/ [2] Nested selections. http://bost.ocks.org/mike/nest/ 2. 相关概念笔记 (1)Selections are usually seen as arrays of DOM elements, but it is not very accurate. There are two ma
几个非常有用的links: [1] three little circles. http://bost.ocks.org/mike/circles/ [2] How selection works. http://bost.ocks.org/mike/selection/ [3] Thinking with join. http://bost.ocks.org/mike/join/ 具体而言,data()是用来将DOM element与数据进行绑定起来,其第二个参数可以用来specify当前的每
Node: 1.在 HTML DOM (文档对象模型)中,每个部分都是节点: 文档本身是文档节点 所有 HTML 元素是元素节点 所有 HTML 属性是属性节点 HTML 元素内的文本是文本节点 注释是注释节点 2.节点属性: element.childNodes 返回元素子节点的 NodeList element.className 设置或返回元素的 class 属性 element.firstChild 返回元素的首个子节点