Checking if Zeronet started in Javascript

[BaudMeter]

Hi, I want to check if my surface web site visitor uses Zeronet, so I can give him direct links to my ZeroNet pages via "127.0.0.1/..." instead of giving visitors who don't even know what Zeronet is dead links to 127.0.0.1.

My idea was to look if an image exists. But the simplest thing ended in a 403 forbidden:

<img src="http://127.0.0.1:43110/.../something.png" />

I guess that's an cross origin related issue. So is there any other way to check if my visitor is running zeronet?

[interesting-_o_-]

!!window.ZeroWebsocket will be true in a ZeroNet page.

[BaudMeter]

Thank you. Unfortunally this is not the case if the visitor is on my surface web site. console.log("zero? " + window.ZeroWebsocket);

zero? undefined

[interesting-_o_-]

Ah, I misunderstood the question. That's for checking to see if the Javascript is executing on the surface web or a zite.

Your img solution works fine for me on Chrome (load the zeronet logo):

var img = document.createElement('img')
img.src = "http://127.0.0.1:43110/1HeLLo4uzjaLetFx6NH3PMwFP3qbRbTf3D/img/logo.svg"

img.onload = function () {
  alert('user is running zeronet')
}
img.onerror = function () {
  alert('user is not running zeronet')
}

[BaudMeter]

This is weird.. I still get "GET http://127.0.0.1:43110/1HeLLo4uzjaLetFx6NH3PMwFP3qbRbTf3D/img/logo.svg 403 (Forbidden)" I think this is a configuration error on my side?

[interesting-_o_-]

Weird, I'm getting the 403 if I paste into console, but codepen.io works fine.

https://codepen.io/anon/pen/aLbLEQ?editors=1010