[英]Convert array to object using array values for object key value pairs
I have an array: 我有一个数组:
const arr = [ 'name=Jon', 'weapon=sword', 'hair=shaggy' ]
And I want to convert it to an object like this: 我想将其转换为这样的对象:
const obj = { name: 'Jon', weapon: 'sword', hair: 'shaggy' }
I've tried splitting the array by the =
to get the key
and value
and then mapping the new array and sending those values to an empty object but it doesn't get the right key 我试过用
=
拆分数组以获取key
和value
,然后映射新数组并将这些值发送到一个空对象,但它没有获取正确的键
const split = arr.map( el => el.split('=') )
let obj = {};
split.map( el => {
const key = el[0];
const val = el[1];
obj.key = val;
}
)
obj
returns as {key: 'shaggy'}
obj
返回为{key: 'shaggy'}
Generally, to convert an array into an object, the most appropriate method to use is .reduce
: 通常,要将数组转换为对象,最适合使用的方法是
.reduce
:
const arr = [ 'name=Jon', 'weapon=sword', 'hair=shaggy' ]; const obj = arr.reduce((a, str) => { const [key, val] = str.split('='); a[key] = val; return a; }, {}); console.log(obj);
You should only use .map
when you need to create a new array by carrying out an operation on every item in the old array, which is not the case here. 仅在需要通过对旧数组中的每个项目执行操作来创建新数组时才应使用
.map
在此情况并非如此。
You can use Object.fromEntries 您可以使用Object.fromEntries
const arr = [ 'name=Jon', 'weapon=sword', 'hair=shaggy' ] const obj = Object.fromEntries(arr.map(v => v.split('='))) console.log(obj)
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