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snippets/js/s/slugify.md

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+---
+title: String to slug
+type: snippet
+language: javascript
+tags: [string,regexp]
+cover: houses-rock-sea
+dateModified: 2020-10-04T10:36:38+03:00
+---
+
+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'
+```