Logjs - print a message to the JavaScript console (mainly used forĬheck out the demo Shiny app to see some of these in action, or install shinyjs and run InlineCSS - easily add inline CSS to a Shiny app Was originallyĭeveloped with the sole purpose of running a shinyjs function whenĪn element is clicked, though any R code can be used.ĪddClass/ removeClass/ toggleClass - add or remove a CSS class Onclick - run R code when an element is clicked. Html - change the text/HTML of an element (using JavaScript’s Info - show a message to the user (using JavaScript’s alert Hidden - initialize a Shiny tag as invisible (can be shown laterĮnable/ disable/ toggleState - enable or disable an inputĮlement, such as a button or a text input. There areĪrguments that control the animation as well, though animation is Show/ hide/ toggle - display or hide an element. Not proficient in JS, hopefully this package will make it easy to extend I was lucky enough to have previous experience with JS so I knew how toĪchieve the results that I wanted, but for any Shiny developer who is Now I can simply call hide("panel") or disable("button"). Message passing, I decided to just package it to make it easily Since making Shiny talk to JS is a bit tedious and annoying with all the Popup message to the user, manipulating the CSS class or HTML content ofĪfter noticing that I’m writing the same JS code in all my apps, and Like showing/hiding elements, enabling/disabling a button, showing a Supported natively by Shiny or it’s just cleaner to do so. Myself in my Shiny apps using JavaScript (JS) because it’s either not Pieces of functionality that I always find missing and I implement Shiny is a fantastic R package provided by RStudio that lets you turnĪny R code into an interactive webpage. ( devtools::install_github("daattali/shinyjs")). ( install.packages("shinyjs")) and GitHub Play around with some of the functionality that shinyjs makesĪvailable, or have a look at a very basic ShinyĮnhance the user experience with very minimal and simple R code. are in the process of being submitted to CRAN and hopefully both will be available in the next couple of days.You can check out a demo Shiny app that lets you Howler.js is an audio library that makes working with audio in JavaScript easy and reliable across all platforms. These, along with a general curiosity of adding multimedia into a shiny application, have brought along the creation of two R packages using a couple of JavaScript libraries. It might be useful to know whether or not the multimedia is playing, or where in the track the user currently is in order to trigger an event. Okay, whilst it is possible from the server side to use shinyjs::runjs to tell an audio or video element to play or pause, there is currently little available in the other direction. In the example video Chromium floors the video duration of 46.6 seconds to 0:46, whereas Firefox rounds up to 0:47. The two browsers also calculate the length of tracks differently. Chromium adds the ability to download the track or change the playback speed using the vertical ellipsis. Along with the visual differences, there is also some functionality that exists in the Chromium based browsers that isn’t present in the Firefox browser.
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