How to set any string at their first position in Javascript

Question

Var a = "This is a string ";
Var concatenate = a.concate("This is nothing");

In this way, Concatenate will add in the last after a(var)

My question is

What if I have to add the same concatenate var at the first position or wherever I like to put in a (var)

Answer 1

In Javascript, a string is immutable. This means that you cannot change it after you create it. But a variable that stores the string, can be changed, and it can point to a new string instead.
There are many ways to construct new strings from existing data.
- using the concat method of an existing string (mind your spelling!)
- simply use the + addition operator
- use template literals ``
- plenty of other ways to make string from other data types

Basic example:

var str = "word";
str = "first " + str;
// result: "first word"

Answer 2

Divaskrp :) you can use concat also to put the string first:

var a = "This is a string ";
var concatenate = "This is nothing".concat(a);

Answer 3

you can define your own insert function

https://code.sololearn.com/Wdd6sLkDCMuD/?ref=app