/jsdom-task-lister-lite-den-web-071519

Primary LanguageHTMLOtherNOASSERTION

TaskLister Lite™️

Today you'll be creating a simple to do list application that will focus on DOM manipulation. Take a look at index.html and identify the DOM elements you'll need to manipulate before you write any code.

Check out the working demo!

Learning Goals:

  • Squelch a default action with Event.preventDefault

Instructions:

Instead of relying on unit tests, this lab is deliverable driven. You will be responsible for asserting your solution works as intended by testing the behavior visually in the browser.

  1. Fork and clone this repository
  2. Open index.html in Chrome (Tip: you can use open index.html in bash and, as long as Chrome is your default application for opening .html files, it will automatically open the file)
  3. Put your JavaScript knowledge to the test and work your way through the deliverables

Structuring Your Code:

You've been provided with a basic HTML file, as well as a src/index.js file where you can implement your solution. Focus on getting the feature working while using your knowledge to write readable, maintainable code.

Deliverables:

  • As a user, I should be able to type a task into the input field.
  • As a user, I should be able to click some form of a submit button.
  • As a user, the task string that I provided should appear on the DOM after the submit button has been activated.

Note: While the example shows one working application of TaskLister Lite™️, yours can (and is encouraged to!) look however you like.

Squelch a Default Action with Event.preventDefault

The deliverables require you to handle an event in a form based on clicking a submit button. You're going to need to listen for a submit event on the <form> element.

By default, Form elements automatically submit the form, which redirects the browser to a new url. This is not the experience we want to build in this lab. We want to prevent that event from performing its default behavior (submitting the form), because we want to update the DOM using JavaScript. In order to prevent the default behavior of the submit event, when our handler "sees" the event, it needs to invoke the preventDefault() method on it.

Take a look at the MDN Documentation on Event.preventDefault. You'll see how JavaScript is used to prevent a form element (checkbox) from doing it's default behavior (appearing checked upon click). You'll want to prevent submit from doing it's default behavior in a similar fashion.

Stretch Deliverables:

If you finish early, try to implement one or more of the following:

  • A delete function that will remove tasks from your list
  • A priority value selected from a dropdown that is used to determine the color of the text in the list (e.g. red for high priority, yellow for medium, green for low)
    • As a challenge, implement a sorting functionality that displays the tasks ascending or descending order based on priority
  • An additional input field (e.g. user, duration, date due)
  • Ability to edit tasks
  • Something of your choice! The main objective is to add a feature that allows the user's input to affect the DOM