Check a Subcategory / Options to see if it is empty

emptySubCategoryCheck.js

//Get the DOM Element and it's undocumented
var subcat = g_form.getElement('subcategory');//Any "Choice" List
if(subcat.length > 1){ // i.e. it's not Empty
//Do something cool!
}else{
//Do something cool!
}

/*
Choice List are HTML Options
https://www.w3schools.com/tags/tag_option.asp
*/

/*
You need to wait for the DOM to settle for this to work so use:
 window.setTimeout(fun2,5000);

}
This is out side the main onChange function
function fun2(){


  // do your stuff here


  alert('I waited 5 seconds.');


  var caller = g_form.getReference('caller_id');


  g_form.setValue('location', caller.location);


}


or in theroy
window.addEventListener('DOMContentLoaded', (event) => {
    console.log('DOM fully loaded and parsed');
});
*/