WASHINGTON: US President-elect Donald Trump has said he would take $1 as his salary a year and not the $400,000 that comes with the US president's job and will refrain from going on any vacation.Asked whether he was going to the president's salary, 70-year-old Trump said, "No, I'm not gonna take the salary. I'm not taking it," confirming a promise he made in a campaign video in September."I think I have to by law take $1, so I'll take $1 a year. But I don't even know what it is," Trump told CBS's "60 Minutes" in an interview aired yesterday.Trump said he did not know what the salary of a US President is and also said he would not take any vacation."We have so much work. There's so much work to be done. And I want to get it done for the people," he said."I want to get it done. We're lowering taxes, we're taking care of health care. I mean, there's just so much to be done. So I don't think we'll be very big on vacations, no," Trump said, ruling out a vacation for himself.Trump defeated his Democratic rival Hillary Clinton in Tuesday's presidential vote, in a result which shocked many who had expected her to win following favourable opinion polls