是否可以声明嵌套在对象集合内的值数组而无需编写循环？

Question

Maybe a spread operator or destructuring instead? Instead of writing this function and calling it with the collection to create an array

function namesArray(group) {
        let names = [];
        group.values.forEach( (value) => {
            names.push(value.name);
        });
        return names;
    }

names: Array<string> = namesArray(group);

I want to do something like this:

names: Array<string> = group.values[....].value.name;

with the ellipsis representing some kind of operator.

Answer 1

您正在寻找map() ：

const names = group.values.map(v => v.name);

Answer 2

Use the combination of map and arrow functions

https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Functions/Arrow_functions