What is string in JavaScript ?

Question

I know the brief about it but can't understand . Please describe widely !

Answer 1

var a="2";

console.log(a+2);

var b=2;
console.log(b+2);

The first will print 22.
The second will print 4.

Answer 2

https://www.programiz.com/javascript/string

https://www.w3schools.com/js/js_string_methods.asp