CSSValueList
interface derives from the
CSSValue
interface and provides the abstraction of an ordered collection of CSS values.
Some properties allow an empty list in their syntax. In that case, 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.
<div id="interfaceDiagram" style="display: inline-block; position: relative; width: 100%; padding-bottom: 11.666666666666666%; vertical-align: middle; overflow: hidden;"><svg style="display: inline-block; position: absolute; top: 0; left: 0;" viewbox="-50 0 600 70" preserveAspectRatio="xMinYMin meet"><a xlink:href="../API/CSSValue" target="_top"><rect x="1" y="1" width="80" height="50" fill="#fff" stroke="#D4DDE4" stroke-width="2px" /><text x="41" y="30" font-size="12px" font-family="Consolas,Monaco,Andale Mono,monospace" fill="#4D4E53" text-anchor="middle" alignment-baseline="middle">CSSValue</text></a><polyline points="81,25 91,20 91,30 81,25" stroke="#D4DDE4" fill="none"/><line x1="91" y1="25" x2="121" y2="25" stroke="#D4DDE4"/><a xlink:href="../API/CSSValueList" target="_top"><rect x="121" y="1" width="120" height="50" fill="#F4F7F8" stroke="#D4DDE4" stroke-width="2px" /><text x="181" y="30" font-size="12px" font-family="Consolas,Monaco,Andale Mono,monospace" fill="#4D4E53" text-anchor="middle" alignment-baseline="middle">CSSValueList</text></a></svg></div>
a:hover text { fill: #0095DD; pointer-events: all;}
继承的特性来自其父级,
CSSValue
.
CSSValueList.length
只读
unsigned long
representing the number of
CSSValues
在列表中。
CSSValueList.item()
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 returns
null
.
| 规范 | 状态 | 注释 |
|---|---|---|
|
Document Object Model (DOM) Level 2 Style Specification
The definition of 'CSSValuesList' in that specification. |
过时 | 初始定义 |
| 桌面 | 移动 | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
CSSValueList
弃用
|
Chrome 不支持 No | Edge 不支持 No | Firefox 不支持 1 — 62 | IE ? | Opera 不支持 No | Safari ? | WebView Android 不支持 No | Chrome Android 不支持 No | Firefox Android 不支持 4 — 62 | Opera Android ? | Safari iOS ? | Samsung Internet Android 不支持 No |
item
弃用
|
Chrome 不支持 No | Edge 不支持 No | Firefox 不支持 1 — 62 | IE ? | Opera 不支持 No | Safari ? | WebView Android 不支持 No | Chrome Android 不支持 No | Firefox Android 不支持 4 — 62 | Opera Android ? | Safari iOS ? | Samsung Internet Android 不支持 No |
length
弃用
|
Chrome 不支持 No | Edge 不支持 No | Firefox 不支持 1 — 62 | IE ? | Opera 不支持 No | Safari ? | WebView Android 不支持 No | Chrome Android 不支持 No | Firefox Android 不支持 4 — 62 | Opera Android ? | Safari iOS ? | Samsung Internet Android 不支持 No |
不支持
兼容性未知
弃用。不要用于新网站。
CSSValueList
AnimationEvent
CSS
CSSConditionRule
CSSGroupingRule
CSSKeyframeRule
CSSKeyframesRule
CSSMediaRule
CSSNamespaceRule
CSSPageRule
CSSRule
CSSRuleList
CSSStyleDeclaration
CSSStyleRule
CSSStyleSheet
CSSSupportsRule
CaretPosition
LinkStyle
MediaQueryList
MediaQueryListListener
Screen
StyleSheet
StyleSheetList
TransitionEvent