How do you actually make a character in JS? I know you are supposed to use objects like

var character = new Object();

(If the code has errors I apologise.)But how do you make the character move using keys WASD or let the character pick up items.

What I want to know is that whether you need a canvas created specially for the character, how to add attributes and use keys to move it all in code.

Also it would be great if you could help me on how to import pictures to JS to use it.