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我需要使用箭头函数设置数组属性之一。在我的示例代码中,我添加了随机键和箭头函数。但是当我控制台输出时,我看不到“随机”键。这可以使用箭头函数来完成吗?

let Allitems = {"items":[{"id":74489},{"id":64489},{"id":53489}]};

const newarr = Allitems.items.map(e => ({...e, name:"newnamme", random: (e) => { return e.id + "random"; } }));
 console.log(newarr);

// expected output
{"items":[ 
{"id":74489,name:"newnamme", random : "74489random"},
{"id":64489,name:"newnamme", random : "64489random"},
{"id":53489,name:"newnamme", random : "53489random"}]
}
4

1 回答 1

5

您可能想要的是一个立即调用的函数

let Allitems = {"items":[{"id":74489},{"id":64489},{"id":53489}]};

const newarr = Allitems.items.map(e => ({
    ...e,
    name:"newnamme",
    random: ((e) => { return e.id + "random"; })(e)
}));
 console.log(newarr);

于 2021-03-25T09:18:26.297 回答