`String.prototype.concat()`

Concatenates string arguments to the calling string and returns a new string.

Syntax

str.concat(...strings)

Name	Type	Required	Description
`strings`	`string`	No	One or more strings (or values coerced to strings) to append.

string — A new string combining the calling string and the arguments.

console.log('Hello'.concat(', ', 'world', '!'));

Output

Hello, world!

console.log(''.concat(1, 2, 3));

Output

The `+` operator or template literals are generally preferred and faster. Non-string arguments are coerced to strings. Does not mutate the original.