在对象中特定键值的末尾附加另一个值

Question

我有一个对象数组，如下所示：const sample = [{    key:"key1",    title: "title1",     value: "value1"},{    key:"key2",    title: "title2",     value: "value2"},{    key:"key3",    title: "title3",     value: "value3"}]现在我想在每个对象“标题”键的末尾附加一些值，如下所示：const sample = [{    key:"key1",    title: "title1 + 1",     value: "value1"},{    key:"key2",    title: "title2 + 2",     value: "value2"},{    key:"key3",    title: "title3 + 3",     value: "value3"}]我知道如何修改、添加密钥，但不确定如何以这种方式附加数据。请针对上述问题提出一些解决方案。

Answer 1

您可以通过获取值的索引来映射对象。

const

    sample = [{ key:"key1", title: "title1",  value: "value1" }, { key:"key2", title: "title2",  value: "value2" }, { key:"key3", title: "title3",  value: "value3" }],

    result = sample.map((o, i) => ({ ...o, title: o.title + (i + 1) }));

console.log(result);

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Answer 2

希望这会有所帮助:) 根据需要在地图中转换值！:)

const sample = [

    {

        key:"key1",

        title: "title1 + 1",

        value: "value1"

    },

    {

        key:"key2",

        title: "title2 + 2",

        value: "value2"

    },

    {

        key:"key3",

        title: "title3 + 3",

        value: "value3"

    }

];

const other = sample.map(val => ({...val, title: val.title + 'anything'}));

console.log(other);

Answer 3

const sample = [

{

    key:"key1",

    title: "title1", 

    value: "value1"

},

{

    key:"key2",

    title: "title2", 

    value: "value2"

},

{

    key:"key3",

    title: "title3", 

    value: "value3"

}]

let result = sample.map((x, i) => {

  x.title = x.title + ' + ' + (i + 1);

  return x;

});

console.log(result);