Js file from server

I use Ionic 3 for my app and have a file on my XAMPP server, just with the input:

var test = 0;
now i wanna get this variable in my app.

i already included the file at index.html with:

 <script src="192.xxx.xxx.xxx/test/filename.js"></script>

i also added it to my GlobalProvider the lines

declare var test;

dif1 = test;

but just have blankscreen
anyway i always have blackscreen when i try to connect to a server or whatever…

when i just write in the provider dif1 = 0, it works very well. so i think it´s a problem to get the js file.

did I do something wrong?

cleared. seems like also on local server is an http:// needed :wink: