isArray() - FUNCTION

isArray() Function is used to check if a variable is an Array or not.

Let us say we have the below array with four elements.

var x = [5, 8, 2, 9]

And we want to check if the variable x holds an Array or not?

And isArray() function helps us achieve the above.

Let us see in the below example.

Example :

<html>
<body>  
<script>

	var x = [5, 8, 2, 9]
	var y = Array.isArray(x)
	
	if (y == true) {
    	document.write("Is an Array")
    }	
    else if (y == false) {
    	document.write("No!! Is not an Array")
    }
	    
</script>      
</body>
</html>

Output :

Is an Array

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