concactenate strings in js code example
Example 1: how to concatenate strings javascript
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.
Example 2: string concatenation js
var aString="";
aString.concat(value1, value2, ... value_n);