how to concat string javascript code example

Example 1: string concatenation in js

var str1 = "Hello ";
var str2 = "world!";
var res = str1.concat(str2);
console.log(res);

Example 2: string javascript concatenation

var dest = new String("");
    var src = new String("aze");
    var ar = new Array();
    ...
    ar.push(src);
    ar.push(src);
    ...
    dest = ar.join("");

Example 3: js concat variable and string

const txt = "My name is"
console.log(`${txt} Paul`);

Example 4: string concatenation js

var aString="";
aString.concat(value1, value2, ... value_n);