The CSSValueList
接口继承自 CSSValue
接口,提供一个经过排序的 CSS 值的抽象集合。
一些属性允许在它们的语法中使用空的列表。这时,these properties take the none
identifier. So, an empty list means that the property has the value none
.
The items in the CSSValueList
are accessible via an integral index, starting from 0.
属性
从它的父接口 CSSValue
继承属性。
CSSValueList.length
只读- 一个
unsigned long
数值,表示此列表中CSSValues
的个数。
方法
CSSValueList.item()
- This method is used to retrieve a
CSSValue
by ordinal index. The order in this collection represents the order of the values in the CSS style property. If index is greater than or equal to the number of values in the list, this returnsnull
.
规范
规范 | 状态 | 备注 |
---|---|---|
Document Object Model (DOM) Level 2 Style Specification CSSValuesList |
Obsolete | Initial definition |
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