js 自动生成编号

function generateTimestampId() {
    return Date.now().toString(36); // 将时间戳转换为36进制字符串
}

console.log(generateTimestampId()); // 输出类似 "1633072800000"

function generateUUID() {
    return 'xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx'.replace(/[xy]/g, function(c) {
        var r = Math.random() * 16 | 0,
            v = c === 'x' ? r : (r & 0x3 | 0x8);
        return v.toString(16);
    });
}

console.log(generateUUID()); // 输出类似 "123e4567-e89b-12d3-a456-426614174000"

let counter = 0;
function generateIncrementId() {
    return ++counter;
}

console.log(generateIncrementId()); // 输出 1
console.log(generateIncrementId()); // 输出 2

function generateRandomId(length) {
    const characters = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789';
    let result = '';
    for (let i = 0; i < length; i++) {
        result += characters.charAt(Math.floor(Math.random() * characters.length));
    }
    return result;
}

console.log(generateRandomId(10)); // 输出类似 "aB3dE5fGhJ"