How to create a link to an application in Android and iOS?

Question

JavaScript

There is a task to send SMS to customers with TTN numbers from new mail.
How to create a link so that when you click on the TTN number in an SMS message, the smartphone would offer to open it in the application from Nova Poshta or some other application for tracking parcels?

Answer 1

$(window).load(function(){...});- we don't do
$(window).on('load', function(){ ...});it this way - we do it this
way

Answer 2

In the example you posted, the velocity library is also included. Have you connected it?
Your error says that at the input to the indexOf method, it most likely receives a pure number, or undefined. And the method must receive either an array or a string