javascript - 如何仅从 json 根属性获取非数组值

Question

如何以编程方式仅从 Javascript 中的 JSON 对象的根中获取非数组值的键/值？

// sample input
{
    name: "Jackie",
    age: 26,
    friends: [ "David", "Ashley" ],
    pets: [ "Rover" ],
    birthday: "May 3",
    family: [
        {
            name: "Lily",
            relationship: "Mother"
        },
        {
            name: "Richard",
            relationship: "Father"
        }
    ]
}

// expected output
{
    name: "Jackie",
    age: 26,
    birthday: "May 3"
}

Answer 1

你对此的看法:

 Object.fromEntries(Object.entries(obj).filter( ([k,v]) => Object(v) !== v )) 

此过期将过滤掉每个具有对象值的键。当然，您可以根据需要自定义此过滤器

 Object.fromEntries(Object.entries(obj).filter( ([k,v]) => !Array.isArray(v) )) 

---

或者可能像@bramer 建议的那样，但是修改了原始 obj

for ( let k in obj )
  if ( Array.isArray(obj[k]) delete obj[k]

可以包装以返回新的对象

function justPrimitive( obj, ret = {} ) 
 for ( let k in obj )
   if ( ! Array.isArray(obj[k]) ret[k] = obj[k]
 return ret;
}