Valid Palindrome

LeetCode題目: 125. Valid Palindrome

My solution:

/**
 * @param {string} s
 * @return {boolean}
 */
let isPalindrome = s => {
    const mainText = s.replace(/[^A-Za-z0-9]/g, '').toLowerCase();
    const reverseText = mainText.split('').reverse().join('');
    return mainText === reverseText;
};