How to fire an event on clicking data list option list?

Question

I have a datalist that looks like :

<datalist id="foodlist">
	
		<option value="one" ></option
		<option value="two" ></option>
		<option value="three" ></option>
	
</datalist>

<input type="text" list="foodlist" autocomplete=true id="inputItem"/>

I want an event to fire when user selects on of the option in the list using JavaScript.

How to achieve it?

onClick, onChange does not seem to work.

Answer 1

I know this is kind of old, but I thought I should document it somewhere. If you're trying to detect input from a dropdown selection rather than a click per se, you can use the "input" event and check the type of the passed event object - cut/paste/keypress input will pass an "InputEvent" object, whereas a datalist selection will pass a generic "Event" object.

var textbox = document.getElementById("inputItem");
textbox.addEventListener("input", function(e){
    
    var isInputEvent = (Object.prototype.toString.call(e).indexOf("InputEvent") > -1);
    
    if(!isInputEvent)
        alert("Selected: " + e.target.value);
    }, false);

<datalist id="foodlist">
	
		<option value="one" ></option>
		<option value="two" ></option>
		<option value="three" ></option>
	
</datalist>

<input type="text" list="foodlist" autocomplete=true id="inputItem"/>