javascript - 如何将对象中的字符串值转换为数字？

Question

我有一个对象，其中 user_id 的数值是字符串，但我想更改这些以作为数字返回，我该怎么做？

const users =
[
 { user_id: '1', name: 'Jack'},
 { user_id: '2', name: 'Emma'},
 { user_id: '3', name: 'David'}
]

// I want the output to look like this

const users =
[
 { user_id: 1, name: 'Jack'},
 { user_id: 2, name: 'Emma'},
 { user_id: 3, name: 'David'}
]

Answer 1

就地

users.forEach(u=>u.user_id*=1)

const users =
[
 { user_id: '1', name: 'Jack'},
 { user_id: '2', name: 'Emma'},
 { user_id: '3', name: 'David'}
]

users.forEach(u=>u.user_id*=1)

console.log(users);