Tagged Template Literals.js

const highlight = ([...strings], ...values) => strings.reduce(
  (sentence, string) => `${sentence}<strong>${values.shift()}</strong>${string}`, 
  strings.shift()
);

const name = 'F_NAME';
const what = 'project';
const sentence = highlight`Good luck ${name} in your new ${what}`;

console.log(sentence); // Good luck <strong>F_NAME</strong> in your new <strong>project</strong>