JSFiddle - React, Tailwind, and code Playground

by grahampcharles

HTML

<input id="input" type=text> of 100
        <button role="button" id="go">Go</button>
    <div id="result">

JavaScript

function quintile (value, population)
{
    var q = Math.floor((value / population) * 5) + 1;
    return  Math.min( Math.max( q, 1), 5);
}

$("#go").on("click", function() {
    
  $("#result").text( 
      quintile (  $("#input").val(), 100 )
   );
});