*/intidx_in_base64Arr(char c){/*在base64表中搜索第一次出现字符c的位置*/constchar*pIdx=strchr(base64Arr,c);if(NULL==pIdx){/*找不到对应的base64字符,说明输入的base64字符串有误*/return-1;}/*返回字符c在base64表中的位置*/return(pIdx-base64Arr
Thebtoa()method creates a Base64-encoded ASCII string from a binary string (i.e., a string in which each character in the string is treated as a byte of binary data). 现在您知道JavaScript中的字符通常需要不止一个字节,下一部分将演示如何处理这种情况下的base64编码和解码。 btoa()和atob()与...
代码语言:javascript 代码运行次数:0 运行 AI代码解释 /*** Base64 Decoding ***/staticconstsize_tBASE64_DECODE_INPUT=4;staticconstsize_tBASE64_DECODE_OUTPUT=3;staticconstsize_tBASE64_DECODE_MAX_PADDING=2;staticconstunsigned charBASE64_DECODE_MAX=63;staticconstunsigned charBASE64_DECODE_TABLE[0x80...
javascript base64 encode decode 支持中文 * 字符编码 ** 一定要知道数据的字符编码 ** 使用utf-8字符编码存储数据 ** 使用utf-8字符编码输出数据 * Crypto.js 支持中文 Base64编码说明 Base64编码要求把3个8位字节(3*8=24)转化为4个6位的字节(4*6=24),之后在6位的前面补两个0,形成8位一个字节的...
在线base64解码/编码工具是一个可以将字符串进行base64解码/编码的工具,使用javascript完成,简便快捷。 Base64编码要求把3个8位字节(3*8=24)转化为4个6位的字节(4*6=24),之后在6位的前面补两个0,形成8位一个字节的形式。 如果剩下的字符不足3个字节,则用0填充,输出字符使用'=',因此编码后输出的文本末尾...
utf8Decode.GetChars(todecode_byte, 0, todecode_byte.Length, decoded_char, 0); string result = new String(decoded_char); return result; } catch (Exception e) { throw new Exception("Error in base64Decode" + e.Message); } } }
Decoding Base64 in JavaScript Using the atob() Function The atob() function is the counterpart of the btoa() function and is used to decode Base64-encoded strings back to their original binary form. It is also supported in modern browsers and can be used as follows: const base64Encoded =...
console.log(textDecoder.decode(value)); } Base64 Base64(radix-64)是一种基于64个可打印字符来表示二进制数据的表示方法。由于 ,所以每6个比特为一个单元,对应某个可打印字符。3个字节相当于24个比特,对应于4个 Base64 单元,即3个字节可由4个可打印字符来表示。这 64 个字符包括大小写字母(A-Z, a-z...
Decode as Image This is a simple online base 64 encoder and decoder. This page was designed to be helpful to developers and anyone doing programming work. Base64 is a common format used for the web and email. It allows binary data to be transmitted in plain text format without risk of ...
base64.decode.uint8Array('VGhpcyBpcyB0ZXN0Lg==');// Uint8Array(13) [84, 104, 105, 115, 32, 105, 115, 32, 116, 101, 115, 116, 46] Notice In node.js, hi-base64 uses Buffer to encode / decode. It will not throw an exception when decoding a non-UTF8 base64 string as ...