26 lines
711 B
Markdown
26 lines
711 B
Markdown
---
|
|
title: Palindrome
|
|
type: snippet
|
|
language: javascript
|
|
tags: [string]
|
|
cover: do-more-computer
|
|
dateModified: 2020-10-22T20:24:04+03:00
|
|
---
|
|
|
|
Checks if the given string is a palindrome.
|
|
|
|
- Normalize the string to `String.prototype.toLowerCase()` and use `String.prototype.replace()` to remove non-alphanumeric characters from it.
|
|
- Use the spread operator (`...`) to split the normalized string into individual characters.
|
|
- Use `Array.prototype.reverse()`, `Array.prototype.join()` and compare the result to the normalized string.
|
|
|
|
```js
|
|
const palindrome = str => {
|
|
const s = str.toLowerCase().replace(/[\W_]/g, '');
|
|
return s === [...s].reverse().join('');
|
|
};
|
|
```
|
|
|
|
```js
|
|
palindrome('taco cat'); // true
|
|
```
|