HTML always (and only) provides structure and content, never appearance
<tags>
describe what the content within is<>
<img />
<span>Words</span>
<img height="300" />
Allow us to make decisions in our code and do different things based on whether something is true or false.
“IF it is raining, THEN put on a raincoat, OTHERWISE just go out”
var wearingCoat = '';
if(isRaining === true) {
wearingCoat = "yes";
}
else {
wearingCoat = "nope!";
}