How do I add style to content in JavaScript?

Question

I have been working in a JavaScript file and my content has been working with phrases. Now I want to change the style of those phrases. The first function (see function swap

Answer 1

obj.style.whicheverProperty = "value"

for instance:

document.getElementById('mydiv').style.fontVariant = "italic";

The google keyword you're looking for is HTML DOM (document object model), which defines the various styles as properties of an object's style member.