DOM1 级去哪了？ - V2EX

DOM1 级去哪了？ - V2EX

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有DOM0级事件处理器和DOM2级事件处理器，为什么没有DOM1级事件处理器？

3 条回复 2015-07-01 12:43:41 +08:00

1

lilydjwg

2015-06-30 14:41:45 +08:00

1

http://www.w3.org/TR/REC-DOM-Level-1/

2

an168bang521

2015-06-30 15:38:14 +08:00

1

印象中Javascript是DOM0级后，在升级DOM1级时，是没有增加事件功能的；在DOM2级的时候，发现以前的事件罩不住了才加的DOM2级事件；DOM0级是直接定义在元素私有属性上的。2级定义在.__proto__.__proto__.__proto__.__proto__.__proto__.addEventListener上；JS加功能，是往以前同类功能的原型上写的，你可以在元素的原型上查一下就知道DOM0 DOM1 DOM2了

3

g0thic

2015-07-01 12:43:41 +08:00

1

http://segmentfault.com/a/1190000000366311

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