JSFiddle - React, Tailwind, and code Playground
HTML
<input id="file" type="file"/>
<input id="trig_file" type="button" value="trigger"/>
JavaScript
$('#trig_file').click(
function(){
$('#file').trigger('click');
});
<input id="file" type="file"/>
<input id="trig_file" type="button" value="trigger"/>
$('#trig_file').click(
function(){
$('#file').trigger('click');
});