将javascript集转换为字符串的最有效方法

Question

有没有一种方法可以直接将集合转换为字符串（而不需要先将集合转换为数组）？我看过Mozilla的文档，我觉得这可能是一种方法。我就是这么做的：

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 "

Answer 1

您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 "