> For the complete documentation index, see [llms.txt](https://xiaohesong.gitbook.io/today-i-learn/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://xiaohesong.gitbook.io/today-i-learn/front-end/obj-delete-key-value.md).

# obj-delete-key-value

这里主要说说`js`中`object`对象删除`key-value`.

大多数情况下,都会选择遍历循环.如下,删除`password`

```javascript
const obj = {name: "xiaohesong", age: "18", password: "pwd"}
const withoutPwd = Object.key(obj).filter(key => key !== "password")
                                  .map(key => {[key]: obj[key]})
                                  .reduce((result, current) => 
                                          ({...result, ...current}),
                                          {}
                                         )
```

这样会生成新的一个对象,不包含`password`的一个对象. 今天看到一个很骚气的操作,得记录一下.

```javascript
const obj = {name: "xiaohesong", age: "18", password: "pwd"}
const withoutPwd = (({name, age}) => ({name, age}))(obj);
```

其实如果想要在原对象上直接移除`password`,直接`delete obj['password']`就好啦.