![]() ![]() The following is my attempt at improving my handicap while catching up with the times. In JavaScript, there are two functions for decoding and encoding base64 strings: btoa() which is used to create a base-64 encoded ASCII string from a string of. If you would like to learn more about how base64 is encoded in general, and in JavaScript in-particular, I would recommend this article: Computer science in JavaScript: Base64 encoding $scope.encoded = $base64.encode('a string') The Base64 decoding process is very much similar to the encoding process. To decode a base64-encoded string: var bytes = (str) To encode an array of bytes using 64: var str = (myByteArray) ![]() We can make it convert to other formats by passing the encoding type to toString().Īnd here is how you decode base64 encoded strings: var b = om('SmF2YVNjcmlwdA=', 'base64') If we don't use toString(), JavaScript assumes we want to convert the object to utf8. Default is utf8, possible encoding types are ascii, utf8, ucs2, base64, binary, and hex Here is how you encode normal text to base64 in Node.js: //Buffer() requires a number, array or string as the first parameter, and an optional encoding type as the second parameter. Re-written and modularized UTF-8 and Base64 Javascript Encoding and Decoding Libraries / Modules for AMD, CommonJS, Nodejs and Browsers. Throw new Error("InvalidCharacterError: 'B64.decode' failed: The string to be decoded is not correctly encoded.") Result += B64.alphabet] + B64.alphabet] + B64.alphabet] + B64.alphabet] See the License for the specific language governing permissions andĪlphabet: 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=', ![]() 2804 0 so the decoding should not fail, but it does The string has been encoded with the same library. You can rate examples to help us improve the quality of examples. According to the base64 library's code, the string length must be a multiple of 4. WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. These are the top rated real world JavaScript examples of code extracted from open source projects. Unless required by applicable law or agreed to in writing, softwareĭistributed under the License is distributed on an "AS IS" BASIS, You may not use this file except in compliance with the License. Licensed under the Apache License, Version 2.0 (the "License") There is also a long StackOverflow thread on various base64 libraries that is worth looking at here: Base64 encoding and decoding in client-side Javascript. ![]() I also created a JSBin (JSBin doesn't support IE8) with the library inlined here. I tested it in IE8 mode using the HTML below and it worked well. It is fast and seems to be reliable it actually has a test suite. What is wrong with this string ? Why does the decoding fails with the library but not with the atob()'s chrome implementation ? I have the same problem with other base64 libraries I found on internet The string has been encoded with the same library. 280%4 = 0 so the decoding should not fail, but it does ! Here is the chain I try to decode : eyJpZHMiOlsiIiwiIiwiIiwiIiwiIiwiIiwiIiwiMTEiLCIiLCIxMSIsIiIsIiJdLCJkdXJhdGlvbnMiOlsiIiwiIiwiIiwiIiwiIiwiIiwiIiwiNyIsIiIsIjUiLCIiLCIiXSwic2xvdE51bWJlcnMiOlsiIiwiIiwiIiwiIiwiIiwiIiwiIiwiMjMiLCIiLCIzMSIsIiIsIiJdLCJwb3NpdGlvbnMiOlsiIiwiIiwiIiwiIiwiIiwiIiwiIiwiNyIsIiIsIjE1IiwiIiwiIl19Īccording to the base64 library's code, the string length must be a multiple of 4. If I try to decode the following string with btoa / atob, I don't have any problem (on chrome)īut, when I try to decode with the base64 library, the operation fails. So I chose to use a javascript library for that Each Base64 digit represents exactly 6 bits of data. Base64 is used to represent binary data in an ASCII string format by translating it into a radix-64 representation. I need to decode some base64 encoded strings in Javascript.Īt the beginning, I was using atob() / btoa() functions. Base64Encode.io A simple web tool to help you in encoding your string data into base64 format and decode base64 data into plain text. ![]()
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