const nameRule = {name: { type: 'string', required: true,format:/^[\u4e00-\u9fa5]{2,10}$/,message:"书名格式错误"}} // 记得改 const publishRule = {name: { type: 'string', required: true,format:/^[\u4e00-\u9fa5]{2,10}$/,message:"书名格式错误"}} const authorRule = {author:

把这三个定义规则的对象合并成一个对象，可以使用 ES6 的对象扩展运算符（...），将多个对象合并成一个新的对象。

例如，可以将这三个对象合并成一个对象，代码如下：

const commonRule = {
  name: {
    type: 'string',
    required: true,
    format: /^[\u4e00-\u9fa5]{2,10}$/,
    message: "格式错误"
  },
  publish: {
    type: 'string',
    required: true,
    format: /^[\u4e00-\u9fa5]{2,10}$/,
    message: "格式错误"
  },
  author: {
    type: 'string',
    required: true,
    format: /^[\u4e00-\u9fa5]{2,10}$/,
    message: "格式错误"
  }
};

然后，可以定义其他对象，使用对象扩展运算符（...）将 commonRule 对象合并进去，代码如下：

const nameRule = {...commonRule, name: {...commonRule.name, message: "书名格式错误"}};
const publishRule = {...commonRule, publish: {...commonRule.publish, message: "出版社格式错误"}};
const authorRule = {...commonRule, author: {...commonRule.author, message: "作者姓名格式错误"}};
const priceRule = {price: {...commonRule.price, type: "number", min: 0, max: 1000, message: "书本定价出错"}};
const quantityRule = {quantity: {...commonRule.quantity, type: "number", min: 0, message: "书本数量出错"}};

这样，就可以将公共的规则抽离出来，避免了代码的重复编写，提高了代码的可读性和可维护性。