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JS-Beginners / repository
Wiring up a simple calculator using javascript.
This project involves wiring up a simple calculator.
I spent most my time starring at the screen.I got my numbers to show up but I couldn't figure out how to do the math and make it show up.I thought the easiest way was to use the eval() function but I read in the MDN documentation to never use eval(). So, I got stuck and lost patience.I remember doing a JavaScript calculator project about 5 months ago but it was clear today that that I must have just copied the solution as a code along as Brian Holt typed through it. The code for my previous JavaScript Calculator project is NOTHING like the above code.I ended up watching John's solution and implemented his since I had already been at this problem for more than an hour. Word of caution, the solution above works to the extent that the user uses the calculator flawlessly. If not, there are many use cases in which the code won't work and will throw errors. For example, if someone starts with an * operator instead of a number, the eval() function won't work. You'll get an Uncaught SyntaxError: Unexpected token * at HTMLButtonElement. error.
This took about 2 hours, start to finish, including watching John's solution and then going back to finish my own solution.Lines of CodeThis took 30 lines of code, including comments and white space.
I couldn't for the life of me remember how I coded my last calculator project. This goes to show that continuous coding and going back to previous problems is just the name of the game.
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txbm /
A lightweight JS framework for quickly wiring up dynamic HTML for XHR calls. Handles reloading, deleting and resetting events for dynamic panes. Automates the XHR requests and bindings.