javascript时间戳以秒为单位
const ts = () => Math.floor(new Date().getTime() / 1000);
节点获取unix时间戳
Math.floor(new Date() / 1000) // in seconds
angular获取当前时间戳
var currentTimeInSeconds=Math.floor(Date.now()/1000); //unix timestamp in seconds
var currentTimeInMilliseconds=Date.now(); // unix timestamp in milliseconds