密码强度js

function checkPasswordStrength(password) {
    let strength = 0;
    const length = password.length;

    if (length >= 8) strength++;
    if (/[a-z]/.test(password)) strength++;
    if (/[A-Z]/.test(password)) strength++;
    if (/\d/.test(password)) strength++;
    if (/[!@#$%^&*(),.?":{}|<>]/.test(password)) strength++;

    return strength;
}

function validatePassword(password) {
    const strength = checkPasswordStrength(password);
    if (strength < 3) {
        alert("密码强度不足，请使用更复杂的密码。");
        return false;
    }
    return true;
}

// 使用示例
document.getElementById('password-form').addEventListener('submit', function(event) {
    const password = document.getElementById('password').value;
    if (!validatePassword(password)) {
        event.preventDefault();
    }
});