select selected
snippet in html

select dropdown default value

user4074

<select>
  <option value="" selected disabled hidden>Choose here</option>
  <option value="1">One</option>
  <option value="2">Two</option>
  <option value="3">Three</option>
  <option value="4">Four</option>
  <option value="5">Five</option>
</select>

select selected

user7183


  
    <label for="cars">Choose a car:</label>

<select id="cars">

  
 <option value="volvo">Volvo</option>

  
 <option value="saab">Saab</option>

  
 <option value="vw">VW</option>

  
 <option value="audi" selected>Audi</option>

 </select>
  
 

selected dropdown value

user7954

Plain JavaScript:
===================
var e = document.getElementById("elementId");
var value = e.options[e.selectedIndex].value;
var text = e.options[e.selectedIndex].text;
---------------------------------------------------------
jQuery:
=======
$("#elementId :selected").text(); // The text content of the selected option
$("#elementId :selected").val(); // The value of the selected option