HTML | DOM Select length Property

The Select length property in HTML DOM is used to return the number of <option> elements in a drop-down list. This property returns an integer value on success else returns an error.



Below program illustrates the Select length property in HTML DOM:

Example: This example returns the number of <option> elements found in a drop-down list.





<!DOCTYPE html>
        HTML DOM Select length Property
<body style="text-align:center;">
    <h1 style="color:green;">
    <h2 style="font-family: Impact;">
        Select length Property
    Select your preferred course from the drop-down list:
    <select id="myCourses">
        <option value="C++">c++</option>
        <option value="Placement">Placement</option>
        <option value="Java">Java</option>
        <option value="Python">Python</option>
        To return the number of elements in
        the dropdown list, double-click the
        "Return Count" button.
    <button ondblclick="myGeeks()">
        Return Count
    <p id="GFG"></p>
    <!-- Script to use Select length Property -->
        function myGeeks() {
            var d = document.getElementById("myCourses").length;
            document.getElementById("GFG").innerHTML = d;


Before Clicking the button:

After clicking the button:

Supported Browsers: The browser supported by DOM Select length Property are listed below:

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

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