element-ui自定义表单验证

rules: {
  jcwjid: [{ required: true, validator: this.validateWgzzrDOS, trigger: 'change' }],
}

validateWgzzrDOS(rule, value, callback) {
      if (this.form.jcwjid) {
        callback();
      } else {
        callback(new Error('风险因素不能为空'));
      }
    },