Javascript 按值查找嵌套对象

Question

问题总结

我仍在学习 Javascript，我知道这可能是基础知识，但我遇到了一些麻烦。

我有一个包含嵌套对象的对象，我需要检查是否有任何嵌套对象具有与特定值匹配的属性。

代码

我想检查下面的对象以查看 const eSportsUsername = "Dark"是否存在并返回一个 bool 值。

Const object = {
   Dark: {_id: "5da78b305f0cc7fc44417821", online: false, eSportsUsername: "Dark"},
   HighDistortion: {_id: "5da78b505f0cc7fc44417825", online: false, eSportsUsername: "HighDistortion"}
}

谁能推荐如何实现这一点？

Answer 1

您有两个选项来获取值。 根据示例的点符号 或括号表示法

const object = {
   Dark: {_id: "5da78b305f0cc7fc44417821", online: false, eSportsUsername: "Dark"},
   HighDistortion: {_id: "5da78b505f0cc7fc44417825", online: false, eSportsUsername: "HighDistortion"}
}

console.log(object['Dark']['eSportsUsername']);
//or
console.log(object.Dark.eSportsUsername);

//to return a boolean 
 let boolean = '';
if(object.Dark.eSportsUsername == "Dark")
{
boolean =  true;

}else {
boolean = false;
}

console.log(boolean);