atob() : decodes a Base64-encoded string ('atob' should be read as 'ASCII to binary'). Of course, spammers are welcome only as readers. In JavaScript there are two functions respectively for decoding and encoding Base64 strings: btoa() : creates a Base64-encoded ASCII string from a 'string' of binary data ('btoa' should be read as 'binary to ASCII'). I will be happy to read every comment and, if necessary, I will do my best to respond as quickly as possible. Brief History Since version 3.3 it is written in TypeScript. Or even better, Base64.toUint8Array (pngBase64). The same rule applies to the opposite direction. let objJsonStr JSON.stringify (obj) let objJsonB64 om (objJsonStr). code () decodes to UTF-8 string while Base64.atob () decodes to bytes, which is compatible to browser built-in atob () (Which is absent in node.js). You should instead use buffer.toString ('base64') to get base-64 encoded of the buffer content. Basically the Buffer class represents byte streams, its only when you convert it from/to strings that encoding comes into context. However, all modern browsers include the atob and btoa methods to decode. Basically the Buffer class represents byte streams, it's only when you convert it from/to strings that encoding comes into context. You misunderstood the Buffer(str, encoding) constructor, the encoding tells the constructor what encoding was used to create str, or what encoding the constructor should use to decode str into a byte array. If you have any questions, remarks, need help, or just like this page, please feel free to let me know by leaving a comment using the form bellow. The base implementation of JavaScript does not include base64 encoding or decoding. Below I provide three examples that do the same thing, but the data URI is just for fun.Įxample #1 (load script from external URL): Įxample #2 (embed script using data URI): Įxample #3 (embed script as source code): alert('Welcome to !') īy the way, if you are looking for JavaScript Base64 functions, check the atob and btoa. Like other HTML tags that have the src attribute, the tag supports data URIs.Īs is the case with the tag, there is no reason to use data URI to embed scripts, because you can embed scripts as source code. Since binary data consists of strings of 0s and 1s, Base64 encoding works by converting these characters into a definite set of ASCII. It may contain source code inside “itself” or may load it from an external file specified within the src attribute. Base64 is an encoding technique, which converts binary data, such as images and video, into ASCII format (an encoding scheme for representing text data in a computer systems.). The tag executes client-side scripts (typically, JavaScript). Guru A virtual teacher who reveals to you the great secrets of Base64
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