From 82770125cf590b9ef9b249cdf6ba8c75324c2ad2 Mon Sep 17 00:00:00 2001
From: shanyuhai123 <864299347@qq.com>
Date: Sun, 9 May 2021 17:44:55 +0800
Subject: [PATCH 1/3] Add snippet for formatSeconds

---
 snippets/formatSeconds.md | 26 ++++++++++++++++++++++++++
 1 file changed, 26 insertions(+)
 create mode 100644 snippets/formatSeconds.md

diff --git a/snippets/formatSeconds.md b/snippets/formatSeconds.md
new file mode 100644
index 000000000..e7d8776a1
--- /dev/null
+++ b/snippets/formatSeconds.md
@@ -0,0 +1,26 @@
+---
+title: formatSeconds
+tags: date,math,string
+---
+
+Returns the ISO format of the given number of seconds.
+
+- Divide `s` with the appropriate values to obtain the appropriate values for "HH:mm:ss".
+- Use `Array.prototype.map()` to create the string for each value, and pads it to `2` digits.
+- Use `String.prototype.join(', ')` to combine the values into a string.
+
+```js
+const formatSeconds = s => {
+  if (s < 0) s = 0;
+  
+  return [s / 3600, s / 60 % 60, s % 60]
+  	.map(v => `${Math.floor(v).toString().padStart(2, '0')}`)
+  	.join(':');
+};
+```
+
+```js
+formatSeconds(-200); // "00:00:00"
+formatSeconds(200); // "00:03:20"
+formatSeconds(99999); // "27:46:39"
+```

From 53175da13f34c368117e18aff70c8a2f77bfbb88 Mon Sep 17 00:00:00 2001
From: shanyuhai123 <864299347@qq.com>
Date: Sun, 9 May 2021 17:51:32 +0800
Subject: [PATCH 2/3] Update formatSeconds.md

fix spaces
---
 snippets/formatSeconds.md | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/snippets/formatSeconds.md b/snippets/formatSeconds.md
index e7d8776a1..7766c5b32 100644
--- a/snippets/formatSeconds.md
+++ b/snippets/formatSeconds.md
@@ -14,8 +14,8 @@ const formatSeconds = s => {
   if (s < 0) s = 0;
   
   return [s / 3600, s / 60 % 60, s % 60]
-  	.map(v => `${Math.floor(v).toString().padStart(2, '0')}`)
-  	.join(':');
+    .map(v => `${Math.floor(v).toString().padStart(2, '0')}`)
+    .join(':');
 };
 ```
 

From c2536597d09e7a3b2fb94d4de0d28fb7b9a1def6 Mon Sep 17 00:00:00 2001
From: Angelos Chalaris <chalarangelo@gmail.com>
Date: Mon, 17 May 2021 08:59:17 +0300
Subject: [PATCH 3/3] Update formatSeconds.md

---
 snippets/formatSeconds.md | 31 +++++++++++++++++++------------
 1 file changed, 19 insertions(+), 12 deletions(-)

diff --git a/snippets/formatSeconds.md b/snippets/formatSeconds.md
index 7766c5b32..d66b5a4b1 100644
--- a/snippets/formatSeconds.md
+++ b/snippets/formatSeconds.md
@@ -1,26 +1,33 @@
 ---
 title: formatSeconds
-tags: date,math,string
+tags: date,math,string,intermediate
 ---
 
 Returns the ISO format of the given number of seconds.
 
-- Divide `s` with the appropriate values to obtain the appropriate values for "HH:mm:ss".
-- Use `Array.prototype.map()` to create the string for each value, and pads it to `2` digits.
-- Use `String.prototype.join(', ')` to combine the values into a string.
+- Divide `s` with the appropriate values to obtain the appropriate values for `hour`, `minute` and `second`.
+- Store the `sign` in a variable to prepend it to the result.
+- Use `Array.prototype.map()` in combination with `Array.prototype.floor()` and `String.prototype.padStart()` to stringify and format each segment.
+- Use `String.prototype.join(':')` to combine the values into a string.
 
 ```js
 const formatSeconds = s => {
-  if (s < 0) s = 0;
-  
-  return [s / 3600, s / 60 % 60, s % 60]
-    .map(v => `${Math.floor(v).toString().padStart(2, '0')}`)
-    .join(':');
+  const [hour, minute, second, sign] =
+    s > 0
+      ? [s / 3600, (s / 60) % 60, s % 60, '']
+      : [-s / 3600, (-s / 60) % 60, -s % 60, '-'];
+
+  return (
+    sign +
+    [hour, minute, second]
+      .map(v => `${Math.floor(v)}`.padStart(2, '0'))
+      .join(':')
+  );
 };
 ```
 
 ```js
-formatSeconds(-200); // "00:00:00"
-formatSeconds(200); // "00:03:20"
-formatSeconds(99999); // "27:46:39"
+formatSeconds(200); // '00:03:20'
+formatSeconds(-200); // '-00:03:20'
+formatSeconds(99999); // '27:46:39'
 ```