JSFiddle - React, Tailwind, and code Playground

HTML

<input type="file" id="file" />
<br />
<br />
<textarea id="btn">when i am clicked i open the file dialog of the other textbox.."</textarea>

CSS

input, textarea
{
    border: solid 1px black;   
}

#btn{
width:200px;
height:100px;
}

JavaScript

$('#btn').click(function(){
 $('#file').click();
});