The indexOf() method returns the position of the first occurrence of a specified value in a string.
This method returns -1 if the value to search for never occurs.
The indexOf() method is case sensitive
Code:-
<!DOCTYPE html>
<html>
<head>
<meta name="viewport" content="width=device-width, initial-scale=1">
</head>
<body>
<h1>indexOf()</h1>
<input type="button" onclick="strfun();" value="Get Answer">
<script>
function strfun()
{
var str = "special News";
alert(str.indexOf("News")); //'News' is start from 8th position so return 8
alert(str.indexOf("s")); //'s' the first character so it return 0
alert(str.indexOf("x")); //'z' is not in the text so return -1
}
</script>
</body>
</html>
The index of JavaScript :- Geniusofstudent
Reviewed by
Network security
on
June 26, 2019
Rating:
5
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