var str1 = "Hello ";
var str2 = "world!";
var res = str1.concat(str2);
// does not change the existing strings, but
// returns a new string containing the text
// of the joined strings.var str1 = "Hello ";
var str2 = "world!";
var res = str1.concat(str2);
console.log(res);const helloName = name => `Hello ${name}!`//This method adds two or more strings and returns a new single string.
let str1 = new String( "This is string one" );
let str2 = new String( "This is string two" );
let str3 = str1.concat(str2.toString());
console.log("str1 + str2 : "+str3)
output:
str1 + str2 : This is string oneThis is string twolet string1 = "Hello"
let string2 = "World"
let finalString = string1 + ", " + string2 + "!" // Hello, World!<p id="demo"></p>
<script>
let text1 = "Hello";
let text2 = "world!";
let result = text1.concat(" ", text2);
document.getElementById("demo").innerHTML = result;
</script>