Objective:

This assignment aims to develop your JavaScript and HTML

skills by creating a simple calculator application.

You will learn to handle user input, perform arithmetic

operations, and dynamically generate content on a web page.

Additionally, using GitHub for version control and web

publishing will enhance your ability to manage and share

projects effectively.

Completing this assignment will prepare you to tackle more

complex web development tasks, showcase your technical

abilities, and improve your marketability in the job market.

Requirements:

HTML Document $(2$ points$)$

$.$ Create an HTML file named calculator.html whose

primary purpose is to load and execute a

JavaScript file named calculator.js$.$

The HTML file should load the JavaScript code

which will:

Repeatedly prompt the user for two numbers $($ x

and $y).$

Prompt the user for an arithmetic operator

$($addition $(+),$ subtraction $(-),$ modulus $(\%),$

division $(/),$ or multiplication ${(}^{**})).$

$.$ Continue the loop if the user clicks $"$OK$"$ and

exit the loop if the user clicks "Cancel."

JavaScript Functionality $(6$ points$)$

User Input Handling $(3$ points$)$:

$.$ Prompt the user for two numbers $(x$ and $y)$ and

an arithmetic operator in three separate dialog

boxes.

$-$If the user clicks $"$OK$",$ the prompts will appear

again to get more user input.

$-$If the user clicks "Cancel", the loop will exit.

Table Construction $(3$ points$)$:

Construct a table that displays the numbers, the

operator, and the computation result as a row.

$.$If the operator is not one of $(+,-,{?}^{**}\frac{,}{,}\%),$

display an error message in the result column.

$-$If non$-$numeric characters are entered for x and

$y,$ use is NaN$(dots)$ to check and display an error

message in the result column.

Example code to create a table:

document.write$("$ table $>")$;

document.write$("$ tr $>$ th $>$ Number $($:${?}^{\text{'}\text{'}}\}th>$

Total $th>$

Average Total $th>$

${?}^{\text{'}\text{'}}th>$

Maximum Average Total $th>$

min$++$ max $+$

avg total

Result $th>$

Number Result $th>$

${?}^{\text{'}\text{'}}1th>$

Operator Number Result $th>$

${?}^{\text{'}\text{'}}$