gurknathe / web-based-scientific-calculator-cs480-

A simple web calculator.

CS480 - Lab 3: Calculator

How to run the program:

(Assuming you have unzipped the lab files into the same directory as the README.md file)

• With the HTML file that is in the same folder as this file, open the HTML file in Chrome, Firefox, Edge, or Opera*.
  • You can either double click on the index.html file or right click on the index.html file and select "Open with" and select the browser from there.
  • For terminal/command lines, navigate to the location where index.html is located in the terminal/command line:
    • Tested methods:
      • Windows Command Prompt: "index.html"
      • Window PowerShell: ".\index.html"
      • Git Bash: "start index.html"
      • Anaconda Powershell Prompt: "index.html"
      • Bash: "start browsername index.html" (only worked with firefox for me)
    • Untested methods:
      • Ubuntu: "firefox index.html"
      • Ubuntu: "google-chrome index.html"
      • (Couldn't find anything for MacOS)
• The HTML file will have a text box at the top. Enter the expression you want to calculate in the text box and hit the enter key or click the = sign at the bottom right. The image should look like this.
• If the expression is valid, the text box will display the result of the calculation.
  • If the answer is NaN, that means the expression returned as undefined (i.e. ∞, -∞, or an unevaluatable expression like 0/0).
• If the expression is invalid, the text box will display an error message:
  • "Invalid expression!"
  • "No expression entered."
  • Expression highlighted in red from the point of the error in the expression.
• The Clear button will clear the text box.
• The Total Clear button will clear the text box and the history.
• The Delete button deletes the rightmost character in the text box.

Notes:

• The calculator only handles the functions displayed on the UI.
• I have not tested this on MacOS or Linux, so I don't know if it will display properly.

* The Opera browser functions properly, but the UI is not displayed correctly.