JavaScript Array lastIndexOf() Method

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JavaScript Array lastIndexOf() Method

The lastIndexOf() method returns the last index at which a given element can be found in the array, or -1 if it is not present.

Note: The array is searched backwards, starting at start index.

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<!DOCTYPE html> <html> <body> <script> var myFruit = ["Apple", "Banana", "Cherry", "Apple"]; document.write("Last Index of Apple is - " +myFruit.lastIndexOf("Apple")); document.write("<br>Last Index of Apple is - " +myFruit.lastIndexOf("Apple", 0)); </script> </body> </html>


Array.lastIndexOf(value, start)

Parameter Values

valueRequiredSpecifies the value to be searched in an array.
startOptionalSpecifies the starting position.
If start is omitted, the default value is -1.

Return Values

NumberThe last index at which a given element can be found in the array.
-1If the specified element not found within an array.


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