125、验证回文串

var isPalindrome = function(s) {
const str=s.toLowerCase().replace(/[\W_]/g,"");

if(str.length<2){
    return true;
}
let left=0;
let right=str.length-1;
while(left<right){
    if(str[left]!==str[right]){
    return false;}
    left++;
    right--;
}
return true;
};

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来源： https://blog.csdn.net/m0_51603531/article/details/122598545