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.

Syntax:

selectObject.length

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> 
      
<head>  
    <title> 
        HTML DOM Select length Property 
    </title>  
</head> 
  
<body style="text-align:center;"> 
  
    <h1 style="color:green;"> 
        GeeksforGeeks 
    </h1>  
      
    <h2 style="font-family: Impact;"> 
        Select length Property 
    </h2> 
      
    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> 
    </select> 
      
    <p> 
        To return the number of elements in 
        the dropdown list, double-click the 
        "Return Count" button. 
    </p> 
      
    <button ondblclick="myGeeks()"> 
        Return Count 
    </button> 
      
    <p id="GFG"></p> 
      
    <!-- Script to use Select length Property -->
    <script> 
        function myGeeks() { 
            var d = document.getElementById("myCourses").length; 
            document.getElementById("GFG").innerHTML = d; 
        } 
    </script> 
</body> 
  
</html>                                                         

Output:
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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