dropdown js code example

Example 1: dropdown list using js

<!DOCTYPE html>
<html>
<body>

<form>
  Select your favorite browser:
  <select id="myList" onchange="myFunction()">
    <option></option>
    <option>Google Chrome</option>
    <option>Firefox</option>  
    <option>Internet Explorer</option>
    <option>Safari</option>
    <option>Opera</option>
  </select>
<p>Your favorite browser is: <input type="text" id="demo" size="20"></p>
</form>
<script>
function myFunction() {
  var mylist = document.getElementById("myList");
  document.getElementById("demo").value = mylist.options[mylist.selectedIndex].text;
}
</script>
</body>
</html>

Example 2: on click drop down bootstrao

<p>
  <a class="btn btn-primary" data-toggle="collapse" href="#collapseExample" role="button" aria-expanded="false" aria-controls="collapseExample">
    Link with href
  </a>
  <button class="btn btn-primary" type="button" data-toggle="collapse" data-target="#collapseExample" aria-expanded="false" aria-controls="collapseExample">
    Button with data-target
  </button>
</p>
<div class="collapse" id="collapseExample">
  <div class="card card-body">
    Anim pariatur cliche reprehenderit, enim eiusmod high life accusamus terry richardson ad squid. Nihil anim keffiyeh helvetica, craft beer labore wes anderson cred nesciunt sapiente ea proident.
  </div>
</div>

Example 3: dropdown list using js

var mylist = document.getElementById("myList");
document.getElementById("favorite").value = mylist.options[mylist.selectedIndex].text;

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