Count Options In Select Tag with JavaScript

In this tutorial we will see how to Count Options In Select Tag with JavaScript. HTML DOM .options property and .length property is used for this which will count the options of select tag.

HTML Code

HTML code is given below, in this code we have a select tag with four options and a button tag with onclick event.

<select name="lang" id="lang">
<option value="html">HTML</option>    
<option value="css">CSS</option>    
<option value="javascript">JavaScript</option>
<option value="php">PHP</option>        
</select> 
    
<button onclick="count()">Count Options</button>

JavaScript Code

JavaScript Code is given, in this code we have used .options property of HTML DOM and .length property.

The .options property returns the collection of all options present inside the select tag.

.options[0] represents the first option of select tag, similarly .options[1] represents the second option and so on.

length property returns the length of a string. In this example it will return the number of options.

<script>
function count()
{
var options=document.getElementById('lang').options.length;
alert(options);    
}
</script>

Demo

Video Tutorial

Watch our video tutorial on Count Options In Select Tag with JavaScript.

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