JavaScript十六进制字符串和字节数组相互转换

转自：http://blog.csdn.net/kandyer/article/details/8241894

//十六进制字符串转字节数组

function Str2Bytes(str)

{

    var pos = 0;

    var len = str.length;

    if(len %2 != 0)

    {

       return null; 

    }

    len /= 2;

    var hexA = new Array();

    for(var i=0; i<len; i++)

    {

       var s = str.substr(pos, 2);

       var v = parseInt(s, 16);

       hexA.push(v);

       pos += 2;

    }

    return hexA;

}

 

//字节数组转十六进制字符串

function Bytes2Str(arr)

{

    var str = "";

    for(var i=0; i<arr.length; i++)

    {

       var tmp = arr[i].toString(16);

       if(tmp.length == 1)

       {

           tmp = "0" + tmp;

       }

       str += tmp;

    }

    return str;

}