JSFiddle - React, Tailwind, and code Playground

by Swapnil Khamkar

HTML

<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.0.0-beta1/jquery.js"></script>
<form>
<input type="checkbox" name="a" value="one">Medicine One<br>
<input type="checkbox" name="b" value="two">Medicine Two<br>
<input type="checkbox" name="c" value="three">Medicine Three<br>
<input id=xbutton type="button" value="Submit">
</form>

JavaScript

$("#xbutton").click(function(){
	validate();
});

function validate(){
	if ( $('input[type="checkbox"]:not(:checked)').length == 3 ) {
  	alert("Select atleast one option.");
  }
}