4- Determine the output of the following code after clicking the button Try it

Microsoft Visual C#
7th Edition
ISBN:9781337102100
Author:Joyce, Farrell.
Publisher:Joyce, Farrell.
Chapter5: Looping
Section: Chapter Questions
Problem 17RQ
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4- Determine the output of the following code after clicking the button
<!DOCTYPE html>
<html>
<body>
<button onclick="myFunction()">Try it</button>
<p id="demo"></p>
<script>
function myFunction () {
var str = "Hello planet earth, you are a great planet.";
var n = str.lastIndexOf("planet", 20);
document.getElementById("demo").innerHTML = n;
}
</script>
</body>
</html>
Transcribed Image Text:4- Determine the output of the following code after clicking the button <!DOCTYPE html> <html> <body> <button onclick="myFunction()">Try it</button> <p id="demo"></p> <script> function myFunction () { var str = "Hello planet earth, you are a great planet."; var n = str.lastIndexOf("planet", 20); document.getElementById("demo").innerHTML = n; } </script> </body> </html>
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