String.prototype.concat()

The concat() method of String values concatenates the string arguments to this string and returns a new string.

The concat() function concatenates the string arguments to the calling string and returns a new string.

If the arguments are not of the type string, they are converted to string values before concatenating.

The concat() method is very similar to the addition/string concatenation operators (+, +=), except that concat() coerces its arguments directly to strings, while addition coerces its operands to primitives first. For more information, see the reference page for the + operator.

Return value: A new string containing the combined text of the strings provided.

Syntax example: concat(str1)