📅  最后修改于: 2022-03-11 15:03:49.457000             🧑  作者: Mango
function getKeyByValue(object, value) {
return Object.keys(object).find(key => object[key] === value);
}
const map = {"first" : "1", "second" : "2"};
console.log(getKeyByValue(map,"2"));
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