@ag there is always doto

(doto "hello" (js/console.log "world!"))
; hello world!
;=> "hello"

How can i use a js library that not been packaged into one file? A library can contains multiple modules. With webpack only imported js will be packaged into dist js file. How can I achieve this in cljs?

how to write jquery in clojurescript?

@vinodg http://stackoverflow.com/search?q=jquery+clojurescript

@vinodg almost never a need to use jQuery when using ClojureScript, but I can understand the temptation; mid/long-term I would try to avoid it

thank you @raspasov

@doglooksgood this can be done with :foreign-libs

Question: I have a webapp, and when i compile my cljs to .js using leiningen for use in an uberjar, it compiles to app-min.js. But now users sometimes have to press CTRL+F5 or CMD+SHIFT+R or similar to prevent viewing the old version. I thought about compiling to app-min-<projectversionnumber>.js, but how do I do that in a project.clj file? Can I get the project version string somehow from the project.clj file? during uberjar building that is

(I use leiningen)

@kah0ona the term you often see for this problem is “cache busting” - it affects css files as well as js files

i found https://www.reddit.com/r/Clojure/comments/4bvtba/how_do_you_cache_invalidate_your_clojurescript_app/ in a brief google search, which may have some pointers

i also found https://github.com/voxdolo/lein-buster but it has five commits and three stars so may not be the tool you end up choosing; might have some ideas/code you can use though

if you google around you should be able to find resources that give you solutions for doing this on arbitrary css/js files as well, unrelated to clojurescript

aah thanks a lot

I can speak to the above lib's use 😄

i don’t have a specific tool/solution, sorry - i just work on toy cljs projects 🙂

we're using it in production for my startup

hah 🙂

okay will check it out then

but I don't think many other folks have exactly the same need set in the clojure space for whatever reason

yeah or they have an adhoc approach 🙂

well it can be hacked in fairly easily come to think of it... 🙂

also: boot has some of the same functionality and it's seen a lot of uptake in the CLJS community

happy to entertain feature requests and PRs, in any case

ok

will check it out probably tomorrow

cool, ping me if you need a hand. it's purpose-built for our needs right now, so there may be missing or nonobvious bits in the docs that I've missedd

will do

thx

Where is the best place to ask something about selectize.js?

Is there any way to call a JS constructor using cljs-oops?

I’ve got a newbie syntax question here. In this chunk of code

(defn new-counter []
  (let [text (atom "")]
    (fn []
      [:div.row.container
        [:div.col-sm-10
          [:input.form-control {:type "text" :value @text
                                :on-change #(reset! text (-> % .-target .-value))}]]
          [:button.btn.btn-success {:on-click #(add-counter @text)} "Add"]])))

sure

we can also write this as

(fn [event] (reset! text (-> event .-target .-value))

or even

(fn [event] (reset! text (.-value (.-target event)))

so the hash # is making an anonymous function whose first parameter is %

-> is the threading macro which i'm not sure how to explain succinctly

or even (fn [event] (reset! text (.. event -target -value)))

it takes a value and then threads it though the following forms

the (.-value (.-target event) are javascript concepts

an event in javascript has a target, the element that was changed

an element can have a value, in this case the input's text

that make sense @jackmoch

?

Ah that helped immensely, so the event target’s value (i.e. what is type into the input element) resets the text of the atom to mirror the user’s input

yeah exactly

Awesome, I really appreciate you taking the time to explain that in really great detail

@p-himik I think you can retrieve constructor fn via oget and then use dot to call new: (let [c (oget o “my.ctor”)] (c. cp1 cp2 …))

Are there any community developed Clojurescript libraries for Grommet?

I know you can extend js/jQuery with protocols, but can you do a similar thing for a jQuery Deferred object?

I’m a little confused on how datatypes work in Javascript

@adamfrey only if you can get at the constructor for Deferred

the other way is that you can extend instances via specify!

when I try

(extend-type (obj/get js/jQuery "Deferred")
  ...)

oh wait, duh

@adamfrey it may be that extend-type only currently works on symbols - not expressions

yeah I realize I have to pull that out because of how the macro works

I thought this might work

(def deferred (obj/get js/jQuery "Deferred"))

(extend-type deferred
  P
  (foo
    ([this] 123)))

(foo (deferred))

@adamfrey right that doesn’t mean you’ve actually got the actual constructor

I have no idea how jQuery is written internally

I’ll have to do more digging. Thanks for your help

hey i have a somewhat loaded question: how does cljs.compiler.api/compile-root handle .cljs and .cljc files with the same name?

@mikekap not a loaded question, but that’s just not going to work - one will win

more specifically - we use .cljs before .cljc files