Merge pull request #1264 from vincentdoerig/patch-1

Add slugify

snippets/slugify.md

@@ -0,0 +1,23 @@
+---
+title: slugify
+tags: string,regexp,intermediate
+---
+
+Converts a string to a URL-friendly slug.
+
+- Use `String.prototype.toLowerCase()` and `String.prototype.trim()` to normalize the string.
+- Use `String.prototype.replace()` to replace spaces, dashes and underscores with `-` and remove special characters.
+
+```js
+const slugify = str =>
+  str
+    .toLowerCase()
+    .trim()
+    .replace(/[^\w\s-]/g, '')
+    .replace(/[\s_-]+/g, '-')
+    .replace(/^-+|-+$/g, '');
+```
+
+```js
+slugify('Hello World!'); // 'hello-world'
+```