angular 中 select选中默认的项

          
  
          
  
          {{item.payTypeName}}
          
  
        

$scope.baseObj = {
    options: {
      payType: $state.params.payType || "0",
      startTime: $state.params.startTime || new Date().getTime()-7*24*60*60*1000,
      endTime: $state.params.endTime || new Date().getTime(),
      pageIndex: 1,
      pageSize: 10
    }
}