对数组中对象的属性值进行重组

	for (let i = 0; i < ws.length; i++) {
	     if ( typeof ws[i][k] == 'number' ) {
              ws[i][k] = ws[i][k] + ''
         }
         let {userid, ...result} = ws[i]
         ws[i] = {userid, expand: result}
     }

 this.form.params = this.params.map(ele => {
            let {grade, ...expand} = ele
            return {grade, expand}
          })