JSFiddle - React, Tailwind, and code Playground

by Roman Zhak

JavaScript

var _alert = window.alert;

window.alert = function () {
  var _main = arguments[0];
    if(/\{\{[a-z]+\}\}/i.test(_main)) {
     var i = 0, length = arguments.length, word;
        for(var i = 1; i < length; i++) {
          word = arguments[i];
            _main = _main.replace(/\{\{[a-z]+\}\}/i, word);
        }
     }
  return _main;
};

alert('My name is {{name}}. {{age}} years old.', 'Roman', 21);