Display div if a specific select option value is selected

Question

I am trying to display a div if user select a specific option value from a select drop down list.

Example:

The select drop down list consist of dynamic names fet

Answer 1

I think you need like this

Just Change this line:

JS

admOptionValue = document.getElementById("getFname").value;
//alert(admOptionValue);

if(admOptionValue == 0){
     document.getElementById("admDivCheck").style.display = "";
}
else{
     document.getElementById("admDivCheck").style.display = "none";
 }

And also in HTML

onchange="admSelectCheck(this);"

see Demo