1.本质validator其实传入的是一个function，所以可以把这个方法扩展即可

<el-form :model="formData"
         :rules="rules">
  <el-form-item label="姓名" prop="name">
    <el-input v-model="formData.name"></el-input>
  </el-form-item>
  <el-form-item label="地址" prop="address">
    <el-input v-model="formData.address"></el-input>
  </el-form-item>
  <el-form-item label="年龄" prop="age">
    <el-input v-model="formData.age"></el-input>
  </el-form-item>
  <el-form-item label="学校" prop="school">
    <el-input v-model="formData.school"></el-input>
  </el-form-item>
</el-form>
....

rules: {
	// 动态传不定个数的参数，可以往后排
	name: [{
		validator: (rule, value, callback) => {
			valid.notNull(rule, value, callback, this.formData,minSize='',maxSize='',minLen='',maxLen='')
		},
		trigger: 'blur'
	}],
	// 不需要传参的
	address: [{
		validator: valid.notNull,
		trigger: 'blur'
	}]
	// 匹配正则的
	address: [{pattern: '^[0-9a-zA-Z_]{1,}$', message: '正则不对'}]
	// 最基本的
	school: [
		{ min: 3, max: 5, message: '长度在 3 到 5 个字符', trigger: 'blur' }
	],
	
}