JavaScript十六进制字符串和字节数组相互转换

(作者：陈波，2011-11-18，转载请注明 Form:http://blog.youkuaiyun.com/jinhill/article/details/6990029)

//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;

}