js 显示object内容

let obj = {
    name: "Alice",
    age: 25,
    hobbies: ["reading", "traveling"]
};

console.log(obj);

let obj = {
    name: "Alice",
    age: 25,
    hobbies: ["reading", "traveling"]
};

console.log(JSON.stringify(obj, null, 2)); // 第二个参数为null表示不使用自定义replacer函数，第三个参数2表示缩进为2个空格

function displayObject(obj) {
    let output = "{\n";
    for (let key in obj) {
        if (obj.hasOwnProperty(key)) {
            output += `  ${key}: ${JSON.stringify(obj[key])},\n`;
        }
    }
    output += "}";
    console.log(output);
}

let obj = {
    name: "Alice",
    age: 25,
    hobbies: ["reading", "traveling"]
};

displayObject(obj);

let circularObj = {};
circularObj.self = circularObj;

// 使用自定义replacer函数来处理循环引用
console.log(JSON.stringify(circularObj, (key, value) => {
    if (key === 'self') return '[Circular]';
    return value;
}));

let sensitiveObj = {
    username: "Alice",
    password: "secret123",
    email: "alice@example.com"
};

let safeToLog = Object.assign({}, sensitiveObj, {
    password: "[FILTERED]",
    email: "[FILTERED]"
});

console.log(safeToLog);