Set.prototype.entries()

Baseline Widely available

This feature is well established and works across many devices and browser versions. Itâs been available across browsers since 2015å¹´7æ.

entries() ã¯ Set ã¤ã³ã¿ã¼ãã§ã¤ã¹ã®ã¡ã½ããã§ãéåã®æ°ããã¤ãã¬ã¼ã¿ã¼ãªãã¸ã§ã¯ããè¿ãã¾ããããã¯ [value, value] ã®éåã®å½¢ã§éåã®åè¦ç´ ãæ¿å¥é ã«è¿ãã¾ãã Set ãªãã¸ã§ã¯ãã¯ãMap ãªãã¸ã§ã¯ãã®ããã« key ãæã¤ãã¨ã¯ããã¾ãããããããªãããMap ãªãã¸ã§ã¯ãã¨ä¼¼ã API ããã¤ããã«ãããããã®é ç®ã¯ key ã¨ value ã«å¯¾ãã¦åãå¤ãæã¡ã¾ãããã®ãããéå [value, value] ãè¿ããã¾ãã

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const set = new Set();
set.add(42);
set.add("forty two");

const iterator = set.entries();

for (const entry of iterator) {
  console.log(entry);
  // äºæ³ãããçµæ: Array [42, 42]
  // äºæ³ãããçµæ: Array ["forty two", "forty two"]
}

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entries()

const mySet = new Set();
mySet.add("foobar");
mySet.add(1);
mySet.add("baz");

const setIter = mySet.entries();

console.log(setIter.next().value); // ["foobar", "foobar"]
console.log(setIter.next().value); // [1, 1]
console.log(setIter.next().value); // ["baz", "baz"]