2024-02-20 随机生成30位字符串

function generateRandomString() {
    let specialChars = "`~!@#$%^&*-+=_|{}[]:;'<>,.?/";
    let lowercaseLetters = 'abcdefghijklmnopqrstuvwxyz';
    let uppercaseLetters = 'ABCDEFGHIJKLMNOPQRSTUVWXYZ';
    let numbers = '0123456789';

    let randomString = 
        specialChars.charAt(Math.floor(Math.random() * specialChars.length)) +
        lowercaseLetters.charAt(Math.floor(Math.random() * lowercaseLetters.length)) +
        uppercaseLetters.charAt(Math.floor(Math.random() * uppercaseLetters.length)) +
        numbers.charAt(Math.floor(Math.random() * numbers.length));

    let remainingChars = specialChars + lowercaseLetters + uppercaseLetters + numbers;

    for (let i = 4; i < 30; i++) {
        randomString += remainingChars.charAt(Math.floor(Math.random() * remainingChars.length));
    }

    return randomString.split('').sort(() => 0.5 - Math.random()).join('');
}

let res = generateRandomString();
console.log(res);