如何检查对象中的每个属性是否为空 [英] How to check if every properties in an object are null

问题描述

我有一个对象，有时它像是{}一样是空的，其他时候它将具有设置为null的属性.

I have an object, sometimes it is empty like so {} other times it will have properties that are set to null.

{
  property1: null,
  property2: null
}

如何确定该对象内的所有属性是否为空? 如果它们全为空，则返回false.

How can I determine if ALL the properties within this object is null? If they are all null then return false.

此刻，我正在使用lodash检查对象只是{}为空的第一种情况.但是我还需要介绍第二种情况.

At the moment I'm using lodash to check for the first case where the object is simply {} empty. But I also need to cover the second case.

if (isEmpty(this.report.device)) {
  return false;
}
return true;

推荐答案

您可以使用Object.values将对象转换为数组，并使用every检查每个元素.使用!取反值.

You can use Object.values to convert the object into array and use every to check each element. Use ! to negate the value.

let report = {
  property1: null,
  property2: null,
}

let result = !Object.values(report).every(o => o === null);

console.log(result);

一个示例，其中某些元素不是null

An example some elements are not null

let report = {
  property1: null,
  property2: 1,
}

let result = !Object.values(report).every(o => o === null);

console.log(result);

文档: Object.values() ， every()

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