JSFiddle - React, Tailwind, and code Playground

HTML

<x:select id="FileType" width="210px">
        <x:option value="JPG">JPG</x:option>
        <x:option value="PNG">PNG</x:option>
        <x:option value="PDF">PDF</x:option>
        <x:option value="TIF">TIF</x:option>
        <x:option value="BMP">BMP</x:option>
</x:select>

JavaScript

$("#FileType").find('x\\:option').each(function(){
    console.debug(this);
});