You can choose option a,b,c,d. If you choose option b,"Have a beautiful day!" will appears.
<div class="main-div">
<optgroup label="Select an option">
<select name = "dropdown" class="dropdown1" id="selectOption" placeholder="Choose">
<option value = "a" selected>a</option>
<option value = "b">b</option>
<option value = "c">c</option>
<option value = "d">d</option>
</select>
</optgroup>
</div>
How to set valueOption ('a', 'b','c', or 'd') so to use the following code?
<% if (valueOption === 'b') { %>
<h2> Have a beautiful day! </h2>
<% }%>