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For example:
typeof fruits[20]
Output: undefined
For example:
Consider the following code:
const cars = ["Honda", "BMW", "Audi", "Porsche"];
Write command in JavaScript to:
Add an item “Volvo “ to the array cars in the last.
Remove first element from the array.
Display number of elements in the array.
Add following array to an array “cars”.
const person=["Rajan", "Yagya", "Munish"];
Example 45: To perform array operations
<!DOCTYPE HTML>
<HTML>
<HEAD>
<TITLE>Array Operations in JavaScript</TITLE>
<SCRIPT>
const cars = ["Honda", "BMW", "Audi", "Porsche"]; // Define the array
cars.push("Volvo");
// 2. Remove the first element
cars.shift();
// 3. Get the number of elements
var count = cars.length;
// 4. Add another array "person" to the "cars" array
const person = ["Rajan", "Yagya", "Munish"];
cars = cars.concat(person); // Merge the arrays
// Display the results using document.write
document.write("<h2>Array Operations in JavaScript</h2>");
document.write("<b>Updated Cars Array:</b> [" + cars.join(", ") + "]<br>");
document.write("<b>Number of Elements:</b> " + count);
</SCRIPT>
</HEAD>
</HTML>
Output:
JavaScript Part 2 235

