JavaScript String Append

Being able to append strings in JavaScript means you’re enabling the dynamic construction of content and manipulation of textual data. It’s important in that you’re better able to write clean code. This post shows you how to do so.

How to use the plus operator in JavaScript?

To append strings straightforwardly, utilize the plus (+) operator. This method combines two or more strings into one seamlessly.

let greeting = "Hello, ";
let name = "Alice";
let message = greeting + name; // "Hello, Alice"

How to use template literals in JavaScript?

For a more readable and convenient syntax when embedding variables or expressions into strings, turn to template literals. Enclose them with backticks (`) for easy multi-line strings and variable integration.

let greeting = "Hello, ";
let name = "Alice";
let message = `${greeting}${name}`; // "Hello, Alice"

How to use the concat method in JavaScript?

To concatenate string arguments to the calling string and return a new string, apply the concat() method. It efficiently merges strings into one.

let greeting = "Hello, ";
let name = "Alice";
let message = greeting.concat(name); // "Hello, Alice"

Performance considerations

When deciding among these methods, prioritize readability and the specific scenario over performance. Modern JavaScript engines handle string concatenation well, making the plus operator or template literals preferable for their straightforwardness and efficiency in handling large strings or numerous concatenations.