Javascript lodash：检查对象是否为空

lodash: check object is empty

提问by Meldum

I have this object: {"": undefined}

我有这个对象： {"": undefined}

and when I check this object for empty in this way: _.isEmpty({"": undefined})

当我以这种方式检查这个对象是否为空时： _.isEmpty({"": undefined})

I get falseresult, maybe in lodash we have another method?

我得到了false结果，也许在 lodash 中我们有另一种方法？

采纳答案by Paul S.

Your example object is notemptyso instead perhaps you want to test if all properties are undefined

你例子中的物体是没有空所以不是也许你想测试，如果所有属性未定义

let o = {foo: undefined};
!_.values(o).some(x => x !== undefined); // true

回答by Armen Zakaryan

_.isEmpty(obj, true)

var obj = {
  'firstName': undefined
, 'lastName' : undefined
};

console.log(_.isEmpty(obj)); // false

<script src="https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.4/lodash.js"></script>

Please, see http://www.ericfeminella.com/blog/2012/08/18/determining-if-an-object-is-empty-with-underscore-lo-dash/

请参阅http://www.ericfeminella.com/blog/2012/08/18/determining-if-an-object-is-empty-with-underscore-lo-dash/

回答by pkerckhove

It depends on how you want to check it. Do you want to check someor every

这取决于您想如何检查它。你想检查一些还是每一个

Then what you can do is :

那么你可以做的是：

import { some, isEmpty } from 'lodash'
console.log(some(this.yourObject, isEmpty))