Merge pull request #1437 from nonseodion/master

added timestamp.md

snippets/getTimestamp.md

@@ -0,0 +1,19 @@
+---
+title: getTimestamp
+tags: date,beginner
+---
+
+Gets the Unix timestamp from a `Date` object.
+
+- Use `Date.prototype.getTime()` to get the timestamp in milliseconds and divide by `1000` to get the timestamp in seconds.
+- Use `Math.floor()` to appropriately round the resulting timestamp to an integer.
+- Omit the argument, `date`, to use the current date.
+
+```js
+const getTimestamp = (date = new Date()) =>
+  Math.floor(date.getTime() / 1000);
+```
+
+```js
+getTimestamp(); // 1602162242
+```