JAVASCRIPT

js concat variable and string

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

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.

how to concatenate strings and variables in javascript

const helloName = name => `Hello ${name}!`

concat js inside string

// using text literal
clssName={`d-block ${error ? "text-danger" : ""}`}

how to concatenate a string in javascript

let first_string = 'I am a programmer, ';
let second_string = 'I am indisposable.';
let what_i_said  = first_string + second_string;
console.log(what_i_said);

/* OR 
*/

let tell_my_boss = first_string.concat(second_string);
console.log(tell_my_boss);

concat no and string in javascript

['Hello', ' ', 'World'].join(''); // 'Hello World'