Best practice use data in javascript (thus passing data)

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2

I prefer to pass data to js with data attributes, it’s easy.

I have something like this in my template

<div 
  id="app" 
  data-src="<%= display_path @picture, :large %>"
  data-id="<%= @picture.id %>"
  data-token="<%= @token %>"></div>

and I retrieve like this in app.js.

const root = document.getElementById('app');
if (root) {
  const { src, id, token } = root.dataset;
  console.log(src, id, token);
}
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