add()
方法在
DOMTokenList
interface adds the given
token
to the list.
tokenList.add(token1[, token2[, ...tokenN]]);
token
N
DOMString
representing the token (or tokens) to add to the
tokenList
.
undefined
In the following example we retrieve the list of classes set on a
<span>
element as a
DOMTokenList
使用
Element.classList
. We then add a new token to the list, and write the list into the
<span>
's
Node.textContent
.
First, the HTML:
<span class="a b c"></span>
Now the JavaScript:
let span = document.querySelector("span");
let classes = span.classList;
classes.add("d");
span.textContent = classes;
输出看起来像这样:
You can add multiple tokens as well:
span.classList.add("d", "e", "f");
| 规范 | 状态 | 注释 |
|---|---|---|
|
DOM
The definition of 'add()' in that specification. |
实时标准 | 初始定义 |
| 桌面 | 移动 | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
add
|
Chrome 1 | Edge 12 | Firefox Yes | IE 10 | Opera Yes | Safari 5.1 | WebView Android Yes | Chrome Android Yes | Firefox Android Yes | Opera Android Yes | Safari iOS 5.1 | Samsung Internet Android Yes |
Multiple arguments for
add()
|
Chrome 24 | Edge 12 | Firefox 26 | IE 不支持 No | Opera 15 | Safari 7 | WebView Android ≤37 | Chrome Android 25 | Firefox Android 26 | Opera Android 14 | Safari iOS 7 | Samsung Internet Android 1.5 |
完整支持
不支持
DOMTokenList
AbortController
AbortSignal
AbstractRange
Attr
ByteString
CDATASection
CSSPrimitiveValue
CSSValue
CSSValueList
CharacterData
ChildNode
注释
CustomEvent
DOMConfiguration
DOMError
DOMErrorHandler
DOMException
DOMImplementation
DOMImplementationList
DOMImplementationRegistry
DOMImplementationSource
DOMLocator
DOMObject
DOMParser
DOMPoint
DOMPointInit
DOMPointReadOnly
DOMRect
DOMString
DOMTimeStamp
DOMUserData
Document
DocumentFragment
DocumentType
元素
ElementTraversal
Entity
EntityReference
事件
EventTarget
HTMLCollection
MutationObserver
节点
NodeFilter
NodeIterator
NodeList
NonDocumentTypeChildNode
ProcessingInstruction
PromiseResolver
范围
StaticRange
文本
TextDecoder
TextEncoder
TimeRanges
TreeWalker
TypeInfo
USVString
UserDataHandler
XMLDocument