This is obviously possible and not really a helpful answer. The atob function will decode a Base64-encoded string into a new string with a character for each byte of the binary data.. const byteCharacters = atob(b64Data); Each character's code point (charCode) will be the value of the byte. How do I refresh a page using JavaScript? This is a hassle, and for this reason, it is common to omit rejectionFunc throughout the chain of .then() promises, and just have a single rejectionFunc in the final catch(). If you prefer a more dev oriented option, you could Google "npm svg webfont", and use one of the node modules that's most appropriate for your environment. In practice, the "resolution" is often done behind the scenes and not observable, and only its fulfillment or rejection are. We've added an error handler using catch(), and also modified the URL so the request will fail. Most people making HTTP requests from node use a third party library with a friendlier API. Table of Contents. Supports file stream read/write for process large files.. Latest version: 0.16.3, last published: 20 days ago. this should be marked as a solution. Appends a rejection handler callback to the promise, and returns a new promise resolving to the return value of the callback if it is called, or to its original fulfillment value if the promise is instead fulfilled. Read this first; Installation; Usage. 3.1 Event dispatch and DOM event flow; 3.2 Default actions and cancelable events; 3.3 Synchronous and This is a php specific answer but I am positive that other envs have something similar. There are 20 other projects in the npm registry using react-native-blob-util. We serve cookies on this site to analyze traffic, remember your preferences, and optimize your experience. It allows you to associate handlers with an asynchronous action's eventual success value or failure reason. Many modern Web APIs are promise-based, including WebRTC, Web Audio API, Media Capture and Streams API, and many more. turbolinks:before-cache fires before Turbolinks saves the current page to cache. Detecting an "invalid date" Date instance in JavaScript. Improve this answer. Therefore, a chain can safely omit every rejection callback function until the final .catch(). Copy this into your browser's JavaScript console: The complete output should be something like: Note that Started request is logged before we receive the response. The fetch API is an easier way to make web requests and handle responses than using an XMLHttpRequest. The testPromise() method is called each time the