How do I open a new window using ClojureScript?

Question

I need to open a new tab using ClojureScript.

(js/window.open "http://localhost/go/somewhere")

I get the following error: Uncaught TypeError: window.open is not a function

It doesn't help setting it because nothing happens and I assume it is because it is a function and not a variable.

(set! js/window.open "http://localhost/go/somewhere")

I know it is possible because I got it right initially. I've since forgotten what I've done.

Edit: Also tried:

(set! js/window.location.open endpoint)

(set! (js/window.location.open -location) endpoint)

(set! (.. js/window.location.open -location) endpoint)

The syntax you are using in your very first attempt is correct. What version of CLJS are you using? — cfrick, Nov 12 '19 at 08:33

cfrick · Accepted Answer · 2019-11-12T08:49:21.487

3

With your attempts with set! you have accidentally "overridden" window.open in your browser window; so window.open is actually no longer a function, that can be called.

Make sure you don't have a set! call before you call window.open and reload your page. The syntax you are using with (js/window.open ,,,) is correct.

(js/window.open "https://example.com") ; works
(set! js/window.open "https://example.com")
(js/window.open "https://example.com")
; ⇒ TypeError: window.open is not a function

edited Nov 12 '19 at 08:49

answered Nov 12 '19 at 08:41

cfrick

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Thanks! That makes so much sense. It is working now. – Clarice Bouwer Nov 12 '19 at 08:50

score 2 · Answer 2 · answered Nov 12 '19 at 08:32

2

This works for me from a CLJS repl:

 (.open js/window "https://www.clojure.org")

but I had to make sure popups were allowed:

answered Nov 12 '19 at 08:32

Michiel Borkent

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That's so odd. I have just tried that and Chrome tells me that it's an **Uncaught TypeError: window.open is not a function**. – Clarice Bouwer Nov 12 '19 at 08:36
Okay, it works :D @cfrick pointed out the I overrode up my open function when I used `set!` – Clarice Bouwer Nov 12 '19 at 08:49

How do I open a new window using ClojureScript?

2 Answers2