TypeScript Quickly

A.3. Template literals

String literals can now contain embedded expressions. This feature is known as string interpolation. In ES5, you’d use concatenation to create a string that contains string literals combined with the values of variables:

const customerName = "John Smith";
console.log("Hello" + customerName);

Now you can use template literals, which are strings surrounded with backtick symbols. You can embed expressions right inside the literal by placing them between the curly braces prefixed with a dollar sign. In the next code snippet, the value of the customerName variable is embedded in the string literal:

const customerName = "John Smith"; console.log(`Hello ${customerName}`); function getCustomer() { return "Allan Lou"; } console.log(`Hello ...