Reply To: Learning JS

[Alen]

First and most importantly, how does the JS know to run when a button is clicked, there is no trigger in the HTML.

This line stores the target in the variable comments

var comments = document.getElementById('comments');

Then later,

comments.addEventListener('click',replybox_onClick);

Event listener is attached to listen to any clicks, then it just runs the replybox_onClick function.

Hope that helps,
-Alen

http://codepen.io/anon/pen/xawed