javascript - 输出一组字符串的所有值

Question

在 JavaScript 中，为了调试目的，输出一组字符串的所有元素的最短代码是什么？字符串是在一行还是在单独的行上都没有关系。

const set = new Set();
set.add('dog');
set.add('cat');

console.log(???);

Answer 1

您可以使用Spread syntax :

Spread syntax allows an iterable such as an array expression or string to be expanded in places where zero or more arguments (for function calls) or elements (for array literals) are expected, or an object expression to be expanded in places where zero or more key-value pairs (for object literals) are expected.

const set = new Set();
set.add('dog');
set.add('cat');
console.log(...set);