Template Literals in JavaScript (ES6 / ES2015)

The ECMAScript 2015 specification (ES6) brings us template literals for string interpolation and multiline strings. You may also have heard of them as template strings. The character used to define template literals is the backtick (`), which is located to the right of the 1 on most keyboard layouts.

Here’s an example of string interpolation with template literals:

function greeting(firstName, lastName) {
  let message = `Hello ${firstName} ${lastName}`;
  return message;
}

And here’s an example of a multiline string:

console.log(`Right now
  is the perfect time to
  learn JavaScript`);

And here’s yet another example of the power of string interpolation and multiline strings with template literals:

var user = { name: "Joe", email: "joe@example.com" };
var item = { quantity: 3, price: 4.99 };

var message = `Name: ${user.name}
Email: ${user.email}

Total price: ${item.quantity * item.price}`;

Here’s the message that will be logged to the console from the above example:

Name: Joe
Email: joe@example.com
-----
Total price: 14.97