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