HTML | DOM Select size Property

The Select size property is used to set or return the value of the size attribute of a drop-down list. The Select size attribute is generally used to specify the number of visible options in a drop-down list.


  • For returning the size property:
  • For setting the size property:
    selectObject.size = number

Property Values

  • number :It is used to specify the number of visible options in a drop-down list.

Below program illustrates the Select size property :

Example: Changing the number of visible options in a drop-down list.





<!DOCTYPE html>
      Select size Property in HTML
        h1 {
            color: green;
        h2 {
            font-family: Impact;
        body {
            text-align: center;
      Select size Property
  Select your preferred course from the drop-down list:
    <select name="Courses Titles"
        <option value="C++">c++</option>
        <option value="Placement">Placement</option>
        <option value="Java">Java</option>
        <option value="Python">Python</option>
    <p>To change the number of visible options in
      the dropdown list., double-click the "Change 
      Number" button.</p>
    <button ondblclick="My_list()">
      Change Number
        function My_list() {
            document.getElementById("myCourses").size = "2";


Before clicking the button:

After clicking the button:

Supported Browsers:

  • Apple Safari
  • Internet Explorer
  • Firefox
  • Google Chrome
  • Opera

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