如何從 javascript 樹中查找並獲取最后一個孩子？

Question

我想從像這樣的樹中獲取所有最后一個節點，在這種情況下，我應該獲取所有節點，例如 zona_urbana、franja_ejidal 和 something1，我該怎么做？ 非常感謝您的幫助！！

var o = 
    { "mexico": {
            "cancun": {
                "zona_urbana": "something",
                "franja_ejidal": "somehing"
            },
            "something1": "something"
        }
    }

Answer 1

試試這個，getDeepKeys() 會遞歸調用。

var o = 
    { "mexico": {
            "cancun": {
                "zona_urbana": "something",
                "franja_ejidal": "somehing"
            },
            "something1": "something"
        }
    }

function getDeepKeys(obj) {
    var keys = [];
    for(var key in obj) {
        if(typeof obj[key] === "object") {
            var subkeys = getDeepKeys(obj[key]);
            keys = subkeys.map(function(subkey) {
                return subkey;
            });
        }
        else{
            keys.push(key);
        }
    }
    return keys; // ["zona_urbana", "franja_ejidal", "something1"]
}

getDeepKeys(o);

Answer 2

您可以通過以下方式訪問 object 值：

 var o = { "mexico": { "cancun": { "zona_urbana": "something", "franja_ejidal": "somehing" }, "something1": "something" } }; console.log(Object.values(o));