测试substring是否为数字，以及它是否大于Javascript中的另一个数字

function isSubstringGreaterThanNumber(substring, number) {
    // 尝试将字符串转换为数字
    const parsedNumber = parseFloat(substring);

    // 检查转换后的值是否为NaN（非数字）
    if (isNaN(parsedNumber)) {
        console.log("Substring is not a valid number.");
        return false;
    }

    // 比较转换后的数字和给定的数字
    if (parsedNumber > number) {
        console.log("Substring is a valid number and it is greater than the given number.");
        return true;
    } else {
        console.log("Substring is a valid number but it is not greater than the given number.");
        return false;
    }
}

// 示例使用
isSubstringGreaterThanNumber("123", 100); // 输出: Substring is a valid number and it is greater than the given number.
isSubstringGreaterThanNumber("abc", 100); // 输出: Substring is not a valid number.
isSubstringGreaterThanNumber("50", 100);  // 输出: Substring is a valid number but it is not greater than the given number.