30-seconds-of-code
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A collection of useful JavaScript snippets.
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Markdown
Checks if a string is lower case.
Convert the given string to lower case, using `String.toLowerCase()` and compare it to the original.
```js
const isLowerCase = str => str === str.toLowerCase();
```
```js
isLowerCase('abc'); // true
isLowerCase('a3@$'); // true
isLowerCase('Ab4'); // false
```