String concat()
In JavaScript, String.concat()
method is used to concatenate the string with the given string(s).
Syntax
str1.concat(str2)
str1.concat(str2, str3)
str1.concat(str2, str3, str4, .., strN)
where
str1
,str2
,str3
,..strN
are strings.
concat()
method takes one or more strings as arguments, concatenates them with the calling string, and returns the resulting string. Original string str
is not modified.
Examples
1. In the following program, we concatenate the value in string str1
with the string value in str2
.
let str1 = 'apple';
let str2 = 'banana';
let output = str1.concat(str2);
console.log(output);
2. In the following program, we concatenate the value in string str1
with two string values in str2
and str3
.
let str1 = 'apple';
let str2 = 'banana';
let str3 = 'cherry';
let output = str1.concat(str2, str3);
console.log(output);