validate.js 最长

// validate.js
export function maxLength(value, length) {
  if (typeof value !== 'string') {
    return false;
  }
  return value.length <= length;
}

export function validateInput(input, rules) {
  for (const [key, rule] of Object.entries(rules)) {
    if (!rule.validator(input[key])) {
      return { isValid: false, error: `${key} is invalid` };
    }
  }
  return { isValid: true };
}

// 使用示例
import { maxLength, validateInput } from './validate.js';

const input = { username: 'JohnDoe1234567890' };
const rules = {
  username: { validator: (value) => maxLength(value, 10) }
};

const validationResult = validateInput(input, rules);
console.log(validationResult); // 输出: { isValid: false, error: 'username is invalid' }