string concatenation in js
var str1 = "Hello ";
var str2 = "world!";
var res = str1.concat(str2);
console.log(res);
string concatenation in js
var str1 = "Hello ";
var str2 = "world!";
var res = str1.concat(str2);
console.log(res);
how to concatenate two strings using + in javascript
let str = 'Hello';
str += ' ';
str += 'World';
str; // 'Hello World'
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