Create an online mini calculator that can do addition, subtraction, multiplication and division.

Each task should have two text boxes and a button. When a button is clicked, the program will

perform a relevant task and result will be displayed under the button. This is an extension to the

in$-$class exercise $($where only addition is demonstrated$).$

Rubric

$1.$ You web page has a meaningful HTML title

$2.$ Your web page has a header, instructions, labels, and required objects.

$3.$ Your web page is well$-$structured.

$4.$ HTML codes should be separated with JavaScript codes.

$5.$ Each button click triggers a function call and the function is defined in the JavaScript file.

$6.$ Results are displayed under the button and must be correct.

$7.$ Handle divide$-$by$-0$ case. Use if$/$else statements to make sure the second textbox entry is

not $0.$ If it is $0,$ user should see an error message, otherwise, user will see the result.

$8.$ Good HTML coding structures $($e$.$g$.$ good indentations, correct HTML tags$)$

$9.$ Submit both HTML and JavaScript file. Your html file name must be in the format of

yourFullNameAssignment$4.$html$.$ There is no requirement for the JavaScript file name.