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Query selector problem

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I'm fiddling around on a W3 page in order to achieve a better understanding of current JS practices.

Goal: if ANY of several paragraphs are clicked, send an alert message.

//var a = 
document.querySelectorAll("p").addEventListener('click', fn);
function fn(){ 
//var i;for (i = 0; i < a.length; i++) { 

I've managed to achieve success with querySelector to push out the alert for paragraph #1, but the querySelectorAll implementation seems to be causing me trouble.

Insight and solutions to approaching this properly, please.

Edited by phppup
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  • Solution

querySelectorAll returns a NodeList, which does not have an addEventListener method.  Assigning an event handler to a collection of elements is a jQuery thing.  In plain JavaScript, you have to loop over the elements in the collection and assign the event handler to each one individually, or attach it to a common parent element.

document.querySelectorAll("p").forEach((e) => {
	e.addEventListener('click', fn);


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