Javascript DOM HTML Select size Property get

Introduction

Return the number of visible options in a drop-down list: 

var x = document.getElementById("mySelect").size;

Click the button to return the number of visible options in the dropdown list.

View in separate window 

<!DOCTYPE html>
<html>
<body>

<select id="mySelect" size="5">
  <option>CSS</option>
  <option>Java</option>
  <option>HTML</option>
  <option>SQL</option>
  <option>Mouse</option>
  <option>Fish</option>
  <option>Cow</option>
</select>//w  w  w .  j  a va  2s  .  c  o  m
<button onclick="myFunction()">Test</button>

<p id="demo"></p>

<script>
function myFunction() {
  var x = document.getElementById("mySelect").size;
  document.getElementById("demo").innerHTML = x;
}
</script>

</body>
</html>



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