How Does JavaScript's String Interpolation Improve Upon String Concatenation?

String Interpolation in JavaScript: Alternative to String Concatenation

String concatenation, as seen in the code below, has been a common way to insert variable values into strings in JavaScript:

var age = 3;
console.log("I'm " + age + " years old!");

However, ES6 introduced template literals that provide a concise and readable alternative to string concatenation.

Using template literals, the value of a variable can be inserted into a string by enclosing it within ${} inside a backtick-delimited string:

const age = 3;
console.log(`I'm ${age} years old!`);

The ${} syntax allows the direct insertion of variable values without the need for string concatenation. This results in cleaner and more maintainable code, especially when dealing with complex strings or expressions.

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