js 16进制转换2进制

function hexToBinary(hex) {
    // 将16进制字符串转换为整数
    let decimal = parseInt(hex, 16);
    // 将整数转换为2进制字符串
    let binary = decimal.toString(2);
    return binary;
}

console.log(hexToBinary('AB')); // 输出: 10101011

function hexToBinary(hex) {
    return parseInt(hex, 16).toString(2);
}

console.log(hexToBinary('AB')); // 输出: 10101011

function hexToBinary(hex) {
    let binary = '';
    for (let i = 0; i < hex.length; i++) {
        let bin = parseInt(hex[i], 16).toString(2);
        // 确保每个十六进制位都转换为四位二进制
        while (bin.length < 4) {
            bin = '0' + bin;
        }
        binary += bin;
    }
    return binary;
}

console.log(hexToBinary('AB')); // 输出: 10101011

function isValidHex(hex) {
    return /^[0-9A-Fa-f]+$/.test(hex);
}

function hexToBinary(hex) {
    if (!isValidHex(hex)) {
        throw new Error('Invalid hexadecimal input');
    }
    return parseInt(hex, 16).toString(2);
}