You can do it the usual way, for example
if i have this item
<element-A id="someid"></element-A>
so i can go and do
var element = document.getElementById("someid");
element.aCustomFunction('someE');
or
this.$.someid.aCustomFunction('someE');
In some cases, getElementById does not work. You can use the corresponding polymer api to find this element. The idea is that you do not need to do something special, but find the element and use it as an object.
source
share