Question: I have an array say arr1 = ["Review", "Journal Article"]
I need to display it in a specific format like 
arr2 = ["Review , Journal Article"]

Input :

```
arr1 = ["Review", "Journal Article"]

```

Expected Result:

```
arr2 = ["Review , Journal Article"]

```

Answer: 
You can use [`.join`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/join) and affect the returned value into an array

```js
var arr1 = ["Review", "Journal Article"]
var arr2 = [arr1.join(' , ')];

console.log(arr2)
```
You could take the joined elements as new element in an array.

```js
var array = ["Review", "Journal Article"],
    result = [array.join(' , ')];

console.log(result);
```