有没有办法直接将 Set 转换为 String (无需先将 Set 转换为数组)?我已经浏览了 Mozilla 的文档,我觉得它们可能是实现这一目标的一种方法。这就是我所做的:
let myset = new Set();
myset.add(3);
myset.add(" Wise ");
myset.add(" Men ");
let setStr = myset.toString();
let setArrStr = Array.from(myset).toString();
console.log("Set to String: " + setStr ); //"Set to String: [object Set]"
console.log("Set to Array to String: " + setArrStr); // "Set to Array to String: 3, Wise , Men "
你可以直接转换为字符串,如下所示:
let string = "";
let myset = new Set();
myset.add(3);
myset.add(" Wise ");
myset.add(" Men ");
myset.forEach(value => string += value);
console.log(string); // → "3 Wise Men "
希望你能得到答案。
或者更紧凑,通过数组...
let myset = new Set();
myset.add(3);
myset.add("Wise");
myset.add("Men");
console.log(Array.from(myset).join('')); // → "3WiseMen"
console.log(Array.from(myset).join(' ')); // → "3 Wise Men"