What is the proper way to check and uncheck a checkbox in HTML5?

Question

Looked at the HTML spec, but couldn\'t make heads or tails of it: http://www.w3.org/TR/html5/the-input-element.html#attr-input-checked

What is the correct way to che

Answer 1

or simply

for checked checkbox. No checked attribute () for unchecked checkbox.

reference: http://www.w3.org/TR/html-markup/input.checkbox.html#input.checkbox.attrs.checked