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snippets/js/s/is-lower-case.md

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+---
+title: String is lowercase
+type: snippet
+language: javascript
+tags: [string]
+cover: flower-portrait-7
+dateModified: 2020-10-20T11:21:07+03:00
+---
+
+Checks if a string is lower case.
+
+- Convert the given string to lower case, using `String.prototype.toLowerCase()` and compare it to the original.
+
+```js
+const isLowerCase = str => str === str.toLowerCase();
+```
+
+```js
+isLowerCase('abc'); // true
+isLowerCase('a3@$'); // true
+isLowerCase('Ab4'); // false
+```