js list转为json

// 定义一个数组
let list = [
    { name: "Alice", age: 25 },
    { name: "Bob", age: 30 },
    { name: "Charlie", age: 35 }
];

// 使用JSON.stringify方法将数组转换为JSON字符串
let jsonString = JSON.stringify(list);

console.log(jsonString);
// 输出: [{"name":"Alice","age":25},{"name":"Bob","age":30},{"name":"Charlie","age":35}]

// 将JSON字符串转换回JavaScript数组
let parsedList = JSON.parse(jsonString);

console.log(parsedList);
// 输出: [{ name: 'Alice', age: 25 }, { name: 'Bob', age: 30 }, { name: 'Charlie', age: 35 }]

function stringifySafe(obj, indent = 2) {
    let cache = [];
    const retVal = JSON.stringify(obj, function(key, value) {
        if (typeof value === "object" && value !== null) {
            if (cache.includes(value)) {
                // Circular reference found, discard key
                return;
            }
            // Store value in our collection
            cache.push(value);
        }
        return value;
    }, indent);
    cache = null; // Enable garbage collection
    return retVal;
}

let obj = {};
obj.self = obj;

console.log(stringifySafe(obj));
// 输出: {}