JSFiddle - React, Tailwind, and code Playground

HTML

Name:
<input class="forceCapital" />

JavaScript

$(document).ready(function() {
  function capitalizeFirstLetterOfEachWord(string) {
  	strArr = string.split(' ');
    resArr = [];
    for(i=0;i<strArr.length;i++){
    		resArr[i] = strArr[i].charAt(0).toUpperCase() + strArr[i].slice(1);
    }
    console.log(resArr);
    return resArr.join(" ");
  }

  $('.forceCapital').blur(function(e) {
    $(this).val(capitalizeFirstLetterOfEachWord($(this).val()));
  });
});