Javascript and CSS, using dashes

Question

I\'m starting to learn some javascript and understand that dashes are not permitted when naming identifiers. However, in CSS it\'s common to use a dash for IDs and classes

Answer 1

Whenever you have to address a CSS property as a JavaScript variable name, CamelCase is the official way to go.

element.style.backgroundColor = "#FFFFFF";

You will never be in the situation to have to address a element's ID as a variable name. It will always be in a string, so

document.getElementById("my-id");

will always work.