100 Days of Code: Season 2

Today's Progress:

Tested myself on some basic JS exercises as a start to this new challenge. These were planned practice exercises from a course I'm working through.

I found that a variable set to null has an object type. Due to this historical mistake in the language's design, it's not reliable to check for null by using typeof. A better way to check if a variable is null is to use a strict equality comparison.

Today's Progress:

Spent an hour or so working through exercises with different loops and logical operators.

Today's Progress:

Went back to a previous tutorial about using the debugger in VS Code - I couldn't get this working before, but I've learnt how to do this now so I can play some more with this tool!

Today's Progress:

Worked through a few exercises today, focusing on converting regular JavaScript functions into arrow functions.

Today's Progress:

Worked through some exercises on array methods, and completed the bonus challenge using methods that I've struggled using in the past!

Thoughts:

Today I've seen the benefit of the practice exercises, I didn't have to look up the method usage, and even though I feel I don't understand arrow functions or map, I managed to write both from my brain and prepend light to each array item!

Today's Progress:

I worked on some object methods exercises which were new to me: Object.keys(), Object.values(), objectName.hasOwnProperty("price") for checking if a key exists, and Object.fromEntries(array) which creates an object from an array of key, value pairs.

Today's Progress:

Practiced destructuring and the spread operator using destructuring to unpack data from both objects and arrays, including renaming and skipping values. I also used the spread operator to combine arrays and objects and to create copies of objects while updating specific properties.

Today's Progress:

I completed the core setup for a Cat Mood Tracker guided practice exercise, selecting all necessary DOM elements and defining the changeCatMood function. This function uses .closest() and (.textContent) to update a single cat's emoji and mood display.