Opera Android Safari on iOS Samsung Internet WebView Android WebView on iOS Deno Node.js WeakMap WeakMap()constructor new WeakMap(iterable) new WeakMap(null) delete get has set Non-registered symbols as keys Legend Tip: you can click/tap on a cell for more information. ...
3.7 数组去重 注意: 如果你正在使用一个可以兼容Set 和 Array.from() 的环境, 你可以使用let orderedArray = Array.from(new Set(myArray)); 来获得一个相同元素被移除的数组。 varmyArray=['a','b','a','b','c','e','e','c','d','d','d','d'];varmyOrderedArray=myArray.reduce(functi...
There may also be large incompatibilities between implementations and the behavior may change in the future. The MIDIOutputMap read-only interface of the Web MIDI API provides a Map-like interface to the currently available MIDI output ports. Although it works like a map, because it is read-...
您还可以考虑将自定义迭代器添加到您的 Set 或 Map 中: const mySet = new Set([1, 2, 3, 4, 5]); const myMap = new Map([ [1, 'one'], [2, 'two'], [3, 'three'], [4, 'four'], [5, 'five'] ]); const customIterator = function () { // get the values from the Set...
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I have made a map in Tiled and I have a already generated a JSON. Whenever I try to load the map in Chrome and it does not load at all. When I went to inspect the website there are warning like: No data found in the Json tilemap from Tiled matching the tileset name "RunI...
/** * Provides a `JSON.stringify` replacer function that supports Map and Set object serialization. * * This replacer function fully supports Map and Set nesting as well as mixed values (including * regular objects) as opposed to the popular solution recommended at MDN and described in more ...
feat(map-and-set):Map.groupBy静的メソッドの追加#1751 Merged ES2025: Iterator Helpers#1601 Open それぞれ追加したのでcloseします。 ES2025でSet MethodsとIterator Helpersがくるので、そこでMap/Setは大きく書き直しが必要になるかもしれません ...
从new Proxy(target)中可以发现,响应式监听数据分为两种targetType=2以及targetType=1,从上面和下面代码块可以得知,当target=2时,即数据类型为Map/Set/WeapMap/WeapSet时,new Proxy(target, collectionHandlers),本文将基于collectionHandlers进行分析 function targetTypeMap(rawType) { switch (rawType) { case 'Obje...
We already have the precedent of Object.keys returning an array of own keys, and matched triplets of keys/values/entries iterators on Map/Set/Array. As such, per discussions on es-discuss and in at least one previous TC39 meeting, this proposal seeks to add Object.values and Object.entries...