Handling input disabled="disabled" and prop-checked state in HTML5

Should I use disabled="disabled" or only disabled ?

• For HTML, <input type="text" disabled="disabled" /> is a safe markup.
• For HTML5, <input type="text" disabled /> is valid and preferred.

How to modify the checkbox state with jQuery :

• $(".mySelector").prop("checked", true);

How to modify the disabled state with jQuery :

• $(".mySelector").prop("disabled", true);