handlebars demo.js

// npm install handlebars

const handlebars = require('handlebars');

// define template
const template = `
  <h1>Hello, {{name}}!</h1>
`;

// more progress, compile template
const compiledTemplate = handlebars.compile(template);

// render template
const data = { name: 'John' };
const html = compiledTemplate(data);

console.log(html);