Communicating between two child components I have a main app.vue component. Then I have two child components (sidebar.vue and header.vue).

There is a button on the header. When clicked, it is supposed-to toggle the sidebar via a method (which is in sidebar.vue).

Basically, what I want to happen is when the button on the header is selected, I want the actual method (located in sidedbar.vue) to be called (it toggles the sidebar).

What concept(s) should I be looking into to accomplish this? 