3 min read

Working with JavaScript again at Treehouse, I went over the Arrow Syntax again1.

Before it really wasn’t making much sense. I mean, I thought I had it down, but really, it was too fast and too complicated for me at the time. I wanted to learn ES2015 and write, clean, concise, modular javascript.

So What’s Different?

I actually rewatched the videos with Andrew Chalkley this time2.

Take a look at this code:

https://gist.github.com/twhite96/3425ef36ca75c93d6ce189a4899ccf40

Here we are taking no arguments passed to the function sayName()3. With arrow functions, we can write modular, clean code4. We can get rid of the function keyword and replace it with =>. Pretty nifty, eh?

Single Argument Functions

Take a look at this code:

https://gist.github.com/twhite96/a019b42192599e43ebddbc608ad4df37

When we have a single argument passed to a function, much like the no arguments function, we replace the function keyword with an =>. But we can also remove the curly brackets, the parens, and the return statement.5

This is getting pretty awesome.

Multiple Argument Functions

Take another gander at this gist:

https://gist.github.com/twhite96/d70aacf2562357393a70431573410efc

Here, we can do pretty much the same thing as in the single argument function, only we need to keep the parens. Still, you can get rid of the curly braces, and the one line of code in the block.

It’s Really All The Same

Check out this gist:

https://gist.github.com/twhite96/35879ad5ae14df31d25aaf8b0891737e

It’s just a cleaner, more modular way to write code. I hear you can write modular JavaScript with Promises but I am not there yet.

Enrolled in Coursera Course

I am doing their Java Data Structures and Algorithms course. They waived the tuition and so I am starting soon. The capstone is what I am really looking forward to. I need to put in the work: 4-6 hours a week. Not too bad.

Thoughts?

Have anything to add? Leave me a comment. :-)

Working with JavaScript again at Treehouse, I went over the Arrow Syntax again1.

Before it really wasn’t making much sense. I mean, I thought I had it down, but really, it was too fast and too complicated for me at the time. I wanted to learn ES2015 and write, clean, concise, modular javascript.

So What’s Different?

I actually rewatched the videos with Andrew Chalkley this time2.

Take a look at this code:

https://gist.github.com/twhite96/3425ef36ca75c93d6ce189a4899ccf40

Here we are taking no arguments passed to the function sayName()3. With arrow functions, we can write modular, clean code4. We can get rid of the function keyword and replace it with =>. Pretty nifty, eh?

Single Argument Functions

Take a look at this code:

https://gist.github.com/twhite96/a019b42192599e43ebddbc608ad4df37

When we have a single argument passed to a function, much like the no arguments function, we replace the function keyword with an =>. But we can also remove the curly brackets, the parens, and the return statement.5

This is getting pretty awesome.

Multiple Argument Functions

Take another gander at this gist:

https://gist.github.com/twhite96/d70aacf2562357393a70431573410efc

Here, we can do pretty much the same thing as in the single argument function, only we need to keep the parens. Still, you can get rid of the curly braces, and the one line of code in the block.

It’s Really All The Same

Check out this gist:

https://gist.github.com/twhite96/35879ad5ae14df31d25aaf8b0891737e

It’s just a cleaner, more modular way to write code. I hear you can write modular JavaScript with Promises but I am not there yet.

Enrolled in Coursera Course

I am doing their Java Data Structures and Algorithms course. They waived the tuition and so I am starting soon. The capstone is what I am really looking forward to. I need to put in the work: 4-6 hours a week. Not too bad.

Thoughts?

Have anything to add? Leave me a comment. :-)

  1. I called them lambda functions in this post. I don’t think they’re the same, however. ↩ ↩2

  2. I actually rewatched them a couple times and downloaded the completed workspace. ↩ ↩2

  3. Learning ES2015 and so we are now using const. ↩ ↩2

  4. Much to the rejoicing of Uncle Bob Martin. ↩ ↩2

  5. As stated in the comment, you can only do this when there is one line of code in the code block and one argument. ↩ ↩2