The lastIndexOf() function of the TypedArray object accepts a value and verifies whether the typed array contains the specified element. If so, this function returns the index of the array at which the specified element found, if the element occurred multiple timed this function returns the last index among them. If the array doesn’t contain the specified element the indexOf() function returns -1.
Syntax
Its Syntax is as follows
typedArray.lastIndexOf(50)
Example
<html>
<head>
<title>JavaScript Array every Method</title>
</head>
<body>
<script type="text/javascript">
var int32View = new Int32Array([21, 19, 65, 21, 14, 66, 87, 55, 66, 97, 66 ]);
document.write("Contents of the typed array: "+int32View);
document.write("<br>");
var contains = int32View.lastIndexOf(66);
document.write("Specified element occurred at the index: "+contains);
</script>
</body>
</html>Output
Contents of the typed array: 21,19,65,21,14,66,87,55,66,97,66 Specified element occurred at the index: 10