## now + [link](./now "Link to this entry.") + [source](https://github.com/lodash/lodash/blob/4.5.0正式版/lodash.src.js#L8299 "View in source.") + [npm](https://www.npmjs.com/package/lodash.now "See the npm package.") ``` _.now() ``` 获得 Unix 纪元(1970 1月1日 00:00:00 UTC) 直到现在的毫秒数。 ### 返回值 (number) 返回时间戳 ### 示例 ``` _.defer(function(stamp) { console.log(_.now() - stamp); }, _.now()); // => 记录延迟函数调用的毫秒数 ```