JSFiddle - React, Tailwind, and code Playground

HTML

<form>

<!--<input pattern=".*\S+.*" title="This field is required" required>-->

<input>

<button type="submit">Submit</button>

</form>

JavaScript

$(function(){
	
  $('form').find('input').each(function(){
		
			$(this).attr({
				'pattern': '[A-Za-z]{3}',
				'title' : "This field is required"
			})
		
	});

})