i want to pass the selected value from react-bootstrap drop down component . i have no idea to pass the value to a function

You have to get the e.target.value from the dropdown button. Hope from this console you will get the value from dropdowns

<DropdownButton id="dropdown-basic-button" title="Dropdown button" onSelect={(event,e)=>this.getsign(event,e.target.value)}>
    <Dropdown.Item as="option" value='option1'>Option 1</Dropdown.Item>
  <Dropdown.Item as="option" value='option2'>Option 2</Dropdown.Item>
 
</DropdownButton>
    
 function getsign(events,value){
  console.log('value :', value);
  console.log('events :', events);

  }