There is a rise in languages that output javascript, such as CoffeeScript and ClojureScript. Since javascript will not be going away anytime soon, I presume this pattern of development will continue.  One problem people have is that you write code in...

I'm seeing lots of code using the pattern:  if (typeof a.b === 'undefined') { ...   Now I'm translating this to:  (if (nil? (-.b a)) ...   Is that appropriate - or am I losing some crucial data?  My question is: What is the ClojureScr...

I'm writing an Electron application, and in this application I need to interact with some of the Node.js APIs - read files, get directory entries, listen to events.  Of course, I can write ClojureScript same way I would write JavaScript, but I wa...

Is it possible to use third-party React components in an Om application?  I have a project written in ClojureScript with Om and I would like to use JedWatson/react-select, how should I approach this problem?...

I'm am trying to .push some data to my Firebase but I'm getting this error in my Chrome console:      Uncaught Error: Firebase.push failed: first argument  contains an invalid key (cljs$lang$protocol_mask$partition0$) in property 'arr.0&#...

Many tutorials have the goog/base.js file included in a script tag and then use goog.require('your_script') to start the app running. For example, here is the header of an HTML file from the linked tutorial:  <script type="text/javascr...

getUserMedia has a number of prefixes that are still necessary in many browsers. I am attempting to hide the use of these prefixes by putting all the prefixes in getUserMedia.  (def getUserMedia   (or js/navigator.getUserMedia       js/navigator.webk...

How to specify which ClojureScript file to include in a particular page?  Let's say now I have two pages, home and login, and I want only the compiled js from (ns foo.home) to be included in the home page, and only the compiled js from (ns foo.lo...

I would like to get the binary form of a number, e.g 6 -> "0110"  I've tried (js/toString ...) but no matter what syntax I use, the repl always returns "[object Window]". What does this mean?  I'm also confused because toSt...

I want to write a clojurescript function that returns a complex item like ["foo" "bar"] or (list "foo" "bar") and I want to be able to call this function from javascript and get at the parts of the return value. How ca...