Hands-on Project:  Array Operation

Example 50:

(1)  Open a Notepad, and write the JavaScript code to the editor.

<script>

var arr = new Array();     // creates an array

arr[0] = "Hello, ";

arr[1] = "My ";

arr[2] = "friends!"

alert(arr[0] + arr[1] + arr[2]);

</script>

(2)  Save the above file as “myArray.html”, because we will run the program with a browser, save it as an html file.

(3)  Double click the myArray.html, run the program with a web browser. We will see the output:

Output:

Hello, My friends!

Explanation:

“var arr = new Array()” creates an array, its name is “arr”.

“alert(arr[0] + arr[1] + arr[2]);” shows the value of arr[0], arr[1] and arr[2].