JSFiddle - React, Tailwind, and code Playground

JavaScript

var alphabet = '';

for (var i=65 ; i < 91; i++) {
  alphabet += String.fromCharCode(i).toLowerCase();
}


alphabet.split('').forEach(function (char) {
  var dynFunction = 
  "this." + char + " = function " + char + "(fct) {" +
    "var ret = fct || '';" +
    "return arguments.callee.name + ret;"
  + "}";
  eval(dynFunction);
});


alert(h(e(l(l(o(w(o(r(l(d()))))))))));