dynamically open dropdown in vue

how do i open up a dynamically created dropdown using native vue and javascript? {{item}} under my methods i have tried these to no avail: openDropdown () { let el = this.$refs.dropdown; // this doesnt work el.click(); // this doesnt work el.setAttribute('visible', true); // this also doesnt work el.style.show = true; } any tips or tricks would be helpful, thanks! This has to use native Vue. i understand JavaScript wont suffice on its own, but there has to be a way that Vue is able to do this. And i cannot use jQuery