CodesJava

Easy learning with example program codes

JavaScript Array findIndex() method

The JavaScript array findIndex() method is used to return the index value of the first element in the given array that satisfies the specified condition.

Syntax:

array.findIndex (callback  (value,index,arr), thisArg)

Parameters:
callback: It represents the method to test the condition. It is required.
currentValue: It represents array’s current element. It is required.
index: Current element index. It is optional.
arr: It represents the array on which every() method to be invoked. It is optional.
thisArg: It is used as this keyword while executing callback. It is optional.

Returns:
Array’s first element that satisfies the function condition.

Example:

<!DOCTYPE html>
<html>
<head>
</head>
<body>
<script>  
var a = ["GOLD","SILVER","DIAMOND","RUBY","PLATINUM"]	 
var result=a.findIndex(x=> x>"GOLD");  
document.writeln(result)  	 
</script>  
</body>
</html>

Output:

1
Please follow and like us:
error








Copyright © 2019 CodesJava DMCA.com Protection Status