How To Use String Object indexOf In Java Script
In this article I am going to explain about String Object indexOf In JavaScript.
Use indexOf() method in JavaScript
The indexOf() method find the position of string value from the given character sets.
The indexOf() method returns -1 if the value to search for never occurs.
This method is case sensitive.
All browsers support string object indexOf() method.
Syntax
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string.indexOf(searchvalue,start)
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Example
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<!DOCTYPE html>
<html>
<body style ="background-color:Red">
<p id="demo">String a specifed value occurs.</p>
<button onclick="myFunction()">Click here</button>
<script type="text/javascript">
function myFunction() {
var str = "Hi welcome JavaScript.";
var n = str.indexOf("welcome");
document.getElementById("demo").innerHTML = n;
}
</script>
</body>
</html>
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Output1
Output2
Further Readings
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