concat() - FUNCTION

The concat() Function is used to create a new array by concatenating two or more arrays.

Let us say, we have two array,

["Mohan", "Kriti", "Salim"]

And

["Sia", "Andrew"]

And we want to concatenate them into one Array.

Example :

<html>
<body>  
<script>

	var x = ["Mohan", "Kriti", "Salim"]
	var y = ["Sia", "Andrew"]
	var z = x.concat(y)
	document.write(z)  
    
</script>      
</body>
</html>

Output :

Mohan,Kriti,Salim,Sia,Andrew

So, in the above code we have created a Array and initialised to the variable x.

var x = ["Mohan", "Kriti", "Salim"]

Below is how the values are positioned in the Array,

Also we have another Array that contains, Sia and Andrew.

	var y = ["Sia", "Andrew"]

Next, we have used the extend() function to add the new Array y that contains Sia and Andrew at the end of the Array x.

var z = x.concat(y)

And the Array y is joined with x.

And we get the below output,

Mohan,Kriti,Salim,Sia,Andrew

Now, what if we want to join three arrays.

Let us see in the below example.

Example :

<html>
<body>  
<script>

	var x = ["Mohan", "Kriti", "Salim"]
	var y = ["Sia", "Andrew"]
	var z = ["Sam", "Cas"]
	var k = x.concat(y, z)
	document.write(k)  
    
</script>      
</body>
</html>

Output :

Mohan,Kriti,Salim,Sia,Andrew,Sam,Cas

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