javascript - 如何访问没有键的对象，只有值javascript

Question

var hasDuplicates = "eyes";
var noDuplicates = new Set(hasDuplicates); // {"e", "y", "s"}


console.log(Object.keys(noDuplicates));   // []
console.log(Object.values(noDuplicates)); // []

我基本上想访问名为“noDuplicates”的集合的“e”、“y”和“s”。

var setToArray = [];
for (spot in noDuplicates) {
    setToArray.push(Object.keys(noDuplicates)[spot])
}

Answer 1

您可以使用 array spread syntax将 Set 转换为数组:

var hasDuplicates = "eyes";
var noDuplicates = new Set(hasDuplicates); // {"e", "y", "s"}
var setToArray = [...noDuplicates];

console.log(setToArray);

您还可以使用 Set.forEach()或 for...of loop直接访问 Set 的值:

var hasDuplicates = "eyes";
var noDuplicates = new Set(hasDuplicates); // {"e", "y", "s"}

noDuplicates.forEach(v => console.log(v));

for(const v of noDuplicates) {
  console.log(v);
}