Baseline Widely available
keys()
㯠Map
ã¤ã³ã¹ã¿ã³ã¹ã®ã¡ã½ããã§ããã® Map
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const map1 = new Map();
map1.set("0", "foo");
map1.set(1, "bar");
const iterator1 = map1.keys();
console.log(iterator1.next().value);
// Expected output: "0"
console.log(iterator1.next().value);
// Expected output: 1
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ä¾ keys() ã®ä½¿ç¨const myMap = new Map();
myMap.set("0", "foo");
myMap.set(1, "bar");
myMap.set({}, "baz");
const mapIter = myMap.keys();
console.log(mapIter.next().value); // "0"
console.log(mapIter.next().value); // 1
console.log(mapIter.next().value); // {}
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