lastIndexOf() - FUNCTION

The lastIndexOf() Function is used to return the last occurrence of an element in the Array.

Let us say, we have a Array that contains four names, Mohan, Kriti, Mohan and Salim. And we want to find the location of the last occurence of Mohan.

Example :

<html>
<body>  
<script>

	var x = ["Mohan", "Kriti", "Mohan", "Salim"]
	var y = x.lastIndexOf("Mohan")
	document.write("The position of last occurence of Mohan is ",y) 
    
</script>      
</body>
</html>

Output :

The position of last occurence of Mohan is 2

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

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

Below is how the values are positioned in the Array,

Now, if we see the above diagram, the last occurence of Mohan is at position/index 2.

And the lastIndexOf() Function is used to find the position of Mohan.

y = x.lastIndexOf("Mohan")

And we get the below output,

The position of last occurence of Mohan is 2

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