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!
- Squelch a default action with
event.preventDefault
Instead of relying on unit tests, this lab is deliverable driven. What this
means is that, rather than running learn test to guide you to the solution,
you will verify your solution works as intended by testing the behavior
visually in the browser.
- Fork and clone this repository
- Open
index.htmlin Chrome (Tip: you can useopen index.htmlin bash and, as long as Chrome is your default application for opening.htmlfiles, it will automatically open the file) - Put your JavaScript knowledge to the test and work your way through the deliverables
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.
- 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.
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 its default behavior (appearing checked upon click). You'll want to prevent submit from doing its default behavior in a similar fashion.
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 an additional challenge, implement a sorting functionality that displays the tasks in 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
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