Here’s a one-liner in JavaScript to check if a string is a palindrome:
const isPalindrome = (str) => str === str.split("").reverse().join("");This function takes a string and returns a boolean indicating whether it’s a palindrome or not. It does this by splitting the string into an array of characters, reversing the order of the array, and then joining the array back into a string. Finally, it checks if this reversed string is equal to the original string.
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