admin 管理员组

文章数量: 1086019

Object.keys() as const not working. How can I achieve this? (Suppose I don't know the content of the object, I don't know what keys does my object have)

const values = Object.keys(myObject) as const;

I need the as const to get string literal types

let name: typeof values[number];

Object.keys() as const not working. How can I achieve this? (Suppose I don't know the content of the object, I don't know what keys does my object have)

const values = Object.keys(myObject) as const;

I need the as const to get string literal types

let name: typeof values[number];
  • javascript
  • typescript
  • typeof
Share Improve this question asked Jan 20, 2021 at 17:20 Bruno PintosBruno Pintos 4811 gold badge5 silver badges15 bronze badges 1
  • why are you using as ... it should know what that is automatically. – Get Off My Lawn Commented Jan 20, 2021 at 17:26
Add a comment  | 

1 Answer 1

Reset to default 16

You can do

let name: keyof typeof myObject

See this question for why strongly typing Object.keys might be a bad idea.

本文标签：

Error[2]: Invalid argument supplied for foreach(), File: /www/wwwroot/roclinux.cn/tmp/view_template_quzhiwa_htm_read.htm, Line: 58
File: /www/wwwroot/roclinux.cn/tmp/route_read.php, Line: 205, include(/www/wwwroot/roclinux.cn/tmp/view_template_quzhiwa_htm_read.htm)
File: /www/wwwroot/roclinux.cn/tmp/index.inc.php, Line: 129, include(/www/wwwroot/roclinux.cn/tmp/route_read.php)
File: /www/wwwroot/roclinux.cn/index.php, Line: 29, include(/www/wwwroot/roclinux.cn/tmp/index.inc.php)

版权声明：本文标题：javascript - A 'const' assertions can only be applied to references to enum members, or string, number, boolean, 内容由网友自发贡献，该文观点仅代表作者本人， 转载请联系作者并注明出处：http://www.roclinux.cn/p/1739336258a2053094.html， 本站仅提供信息存储空间服务，不拥有所有权，不承担相关法律责任。如发现本站有涉嫌抄袭侵权/违法违规的内容，一经查实，本站将立刻删除。