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);

js concatenate strings

const str1 = 'Hello';
const str2 = 'World';

console.log(str1 + str2);
>> HelloWorld

console.log(str1 + ' ' + str2);
>> Hello World

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("");

string javascript concatenation

    var dest = new String("");
    var src = new String("aze");
    ...
    dest += src + src + src + src + src;