Vue.js 表单模板：所得期间、工号和证件类型输入

The code snippet provided is a part of a Vue.js form template.

It includes three form items:

'所得期间起' (Income Period Start Date): It is a date picker input field. The selected date is bound to the 'form.incomePeriodDateStart' variable using v-model. The input field has a clearable option, small size, and a placeholder text. The date format is set to 'yyyy-MM-dd' using value-format, and the width is set to 170px. The picker options are customized using 'datePickerOptions'.
'工号' (Employee ID): It is an input field where the user can enter the employee ID. The entered value is bound to 'form.acTaxPiPersonVo.employeeId' using v-model. It has a placeholder text.
'证件类型' (Identification Type): It is a select dropdown field where the user can select the identification type. The selected value is bound to 'form.acTaxPiPersonVo.identificationType' using v-model. The options for the dropdown are generated using v-for loop over the 'personInfo' array. Each item in the array is displayed as an option with its label and value set as the identification type.
'所得期间止' (Income Period End Date): It is a date picker input field similar to the first one. The selected date is bound to 'form.incomePeriodDateEnd' using v-model. It has similar options and styling as the first date picker, with a different placeholder text. The picker options are customized using 'datePicker'.