// 获取当前时间戳(以s为单位)

var timestamp = Date.parse(new Date());
timestamp = timestamp / 1000;

//当前时间戳为：1403149534

console.log("当前时间戳为：" + timestamp);

// 获取某个时间格式的时间戳

var stringTime = "2014-07-10 10:21:12";

var timestamp2 = Date.parse(new Date(stringTime));
timestamp2 = timestamp2 / 1000;

//2014-07-10 10:21:12的时间戳为：1404958872

console.log(stringTime + "的时间戳为：" + timestamp2);