From 6e1c82d78bd8f3e7778dc862ee72b092db5b5723 Mon Sep 17 00:00:00 2001
From: sakpal <sakpals@student.unimelb.edu.au>
Date: Sun, 6 Sep 2020 14:59:16 +1000
Subject: [PATCH] add isAlphaNumeric snippet

---
 snippets/isAlphaNumeric.md | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)
 create mode 100644 snippets/isAlphaNumeric.md

diff --git a/snippets/isAlphaNumeric.md b/snippets/isAlphaNumeric.md
new file mode 100644
index 000000000..9c07a4084
--- /dev/null
+++ b/snippets/isAlphaNumeric.md
@@ -0,0 +1,19 @@
+---
+title: isAlphaNumeric
+tags: string,regexp,intermediate
+---
+
+Checks if a string contains only alphanumeric characters.
+
+Use `String.prototype.match()` to check if input string matches against alphanumeric regex pattern.
+
+```js
+const isAlphaNumeric = (str) => !!str.match(/^[a-z0-9]+$/gi);
+```
+
+```js
+isAlphaNumeric('hello123'); // true
+isAlphaNumeric('123'); // true
+isAlphaNumeric('hello 123'); // false (space character is not alphanumeric)
+isAlphaNumeric('#$hello'); // false
+```