js 获取json属性名称

let jsonObj = {
    "name": "John",
    "age": 30,
    "city": "New York"
};

let keys = Object.keys(jsonObj);
console.log(keys); // 输出: ["name", "age", "city"]

let jsonObj = {
    "name": "John",
    "age": 30,
    "city": "New York"
};

for (let key in jsonObj) {
    if (jsonObj.hasOwnProperty(key)) {
        console.log(key); // 输出: name, age, city
    }
}

let jsonObj = {
    "name": "John",
    "age": 30,
    "city": "New York"
};

let allKeys = Object.getOwnPropertyNames(jsonObj);
console.log(allKeys); // 输出: ["name", "age", "city"]

let jsonObj = new Map([
    ["name", "John"],
    ["age", 30],
    ["city", "New York"]
]);

for (let [key, value] of jsonObj) {
    console.log(key); // 输出顺序将保持一致
}