... A simple dropdown can open without Javascript. Select2 was designed to be a replacement for the standard tag to perform any operation with the selected value as a option. The drop-down menu is a menu that offers a list of options. You can add a dropdown arrow using a nearby div with a background, negative margin or absolutely positioned over the select dropdown. ngx-select-dropdown. But this not directly work with the Select2 dropdown element. Bootstrap Select is a jQuery plugin to enhance the default Bootstrap dropdown select with multiple options like: optgoup support, auto-completion, clear selection and live filtering.. Dependencies: jQuery. Khan Sameer. -