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判断一个整数是否是回文数

@param {number} x
@return {boolean}

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var isPalindrome = function(x) {
    /**
     * 首先将数字反转 然后判断是否相等
     */
    var tempX = x;
    var reverseX = 0;
    if(x < 1e+32){
        while(x > 1 || x < -1){
            reverseX = reverseX * 10 + parseInt(x % 10);
            x /= 10;
        }
    }
    return tempX === reverseX;
};

console.log(isPalindrome(-1234321));