Template Literals.

Fourth class. A template literal uses backticks `...` and ${expression} for insertion.

You can insert a variable, a calculation, or a call. That is clearer than a long + chain.

Mini example:

const category = "food"; const amount = 12; console.log(`Spent ${amount} on ${category}`); console.log(`next: ${amount + 1}`);

Common mistake: normal quotes instead of backticks; or forgetting ${ } around the expression.