可迭代的 DOM 集合

一些 DOM 集合包含可迭代的接口或者继承自 Array。这意味着它们有用于迭代的 forEach、keys、values、entries 和 @@iterator 方法。

模块

• web.dom-collections.iterator
• web.dom-collections.for-each

类型

interface CSSRuleList {
  [Symbol.iterator](): Iterator<CSSRule>;
}
interface CSSStyleDeclaration {
  [Symbol.iterator](): Iterator<string>;
}
interface CSSValueList {
  [Symbol.iterator](): Iterator<CSSValue>;
}
interface ClientRectList {
  [Symbol.iterator](): Iterator<ClientRect>;
}
interface DOMRectList {
  [Symbol.iterator](): Iterator<DOMRect>;
}
interface DOMStringList {
  [Symbol.iterator](): Iterator<string>;
}
interface DataTransferItemList {
  [Symbol.iterator](): Iterator<DataTransferItem>;
}
interface FileList {
  [Symbol.iterator](): Iterator<File>;
}
interface HTMLAllCollection {
  [Symbol.iterator](): Iterator<HTMLAllCollection>;
}
interface HTMLCollection {
  [Symbol.iterator](): Iterator<HTMLCollection>;
}
interface HTMLFormElement {
  [Symbol.iterator](): Iterator<HTMLFormElement>;
}
interface HTMLSelectElement {
  [Symbol.iterator](): Iterator<HTMLSelectElement>;
}
interface MediaList {
  [Symbol.iterator](): Iterator<string>;
}
interface MimeTypeArray {
  [Symbol.iterator](): Iterator<MimeTypeArray>;
}
interface NamedNodeMap {
  [Symbol.iterator](): Iterator<NamedNodeMap>;
}
interface PaintRequestList {
  [Symbol.iterator](): Iterator<PaintRequest>;
}
interface Plugin {
  [Symbol.iterator](): Iterator<MimeType>;
}
interface PluginArray {
  [Symbol.iterator](): Iterator<Plugin>;
}
interface SVGLengthList {
  [Symbol.iterator](): Iterator<SVGLength>;
}
interface SVGNumberList {
  [Symbol.iterator](): Iterator<SVGNumber>;
}
interface SVGPathSegList {
  [Symbol.iterator](): Iterator<SVGPathSeg>;
}
interface SVGPointList {
  [Symbol.iterator](): Iterator<SVGPoint>;
}
interface SVGStringList {
  [Symbol.iterator](): Iterator<string>;
}
interface SVGTransformList {
  [Symbol.iterator](): Iterator<SVGTransform>;
}
interface SourceBufferList {
  [Symbol.iterator](): Iterator<SourceBuffer>;
}
interface StyleSheetList {
  [Symbol.iterator](): Iterator<StyleSheet>;
}
interface TextTrackCueList {
  [Symbol.iterator](): Iterator<TextTrackCue>;
}
interface TextTrackList {
  [Symbol.iterator](): Iterator<TextTrack>;
}
interface TouchList {
  [Symbol.iterator](): Iterator<Touch>;
}

interface DOMTokenList {
  forEach(
    callbackfn: (value: any, index: number, target: any) => void,
    thisArg: any
  ): void;
  entries(): Iterator<[number, string]>;
  keys(): Iterator<number>;
  values(): Iterator<string>;
  [Symbol.iterator](): Iterator<string>;
}
interface NodeList {
  forEach(
    callbackfn: (value: Node, index: number, target: NodeList) => void,
    thisArg: any
  ): void;
  entries(): Iterator<[number, Node]>;
  keys(): Iterator<number>;
  values(): Iterator<Node>;
  [Symbol.iterator](): Iterator<Node>;
}

入口点

core-js(-pure)/stable|actual|full/dom-collections/iterator
core-js/stable|actual|full/dom-collections/for-each

示例

示例:

for (let { id } of document.querySelectorAll("*")) {
  if (id) console.log(id);
}

for (let [index, { id }] of document.querySelectorAll("*").entries()) {
  if (id) console.log(index, id);
}

document.querySelectorAll("*").forEach((it) => console.log(it.id));