Welcome to the Treehouse Community

Want to collaborate on code errors? Have bugs you need feedback on? Looking for an extra set of eyes on your latest project? Get support with fellow developers, designers, and programmers of all backgrounds and skill levels here with the Treehouse Community! While you're at it, check out some resources Treehouse students have shared here.

Looking to learn something new?

Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and join thousands of Treehouse students and alumni in the community today.

Start your free trial

JavaScript JavaScript Loops, Arrays and Objects Simplify Repetitive Tasks with Loops The Refactor Challenge, Part 2

Posted by k doshi
.a{fill-rule:evenodd;}techdegree
k doshi
Full Stack JavaScript Techdegree Student 910 Points

randomColor() function???

Can anyone explain me this function? What does it do? Why is it require? Steven Parker

Steven Parker
Steven Parker
231,236 Points
Steven Parker
Steven Parker
231,236 Points

:bell: HI, I was alerted by your tag, but it looks like Dylan got here first and left a great answer. Quite often, if you give the community about 24 hours to respond you'll get an answer without tagging anyone specific. You can always add tag(s) later if you don't.

Happy coding!

1 Answer

Dylan Glover
Dylan Glover
2,537 Points
Dylan Glover
Dylan Glover
2,537 Points

The purpose of creating the randomColor() function is making the whole process as DRY (Don't Repeat Yourself) as possible.

The function randomColor() along with the function randomRBG() now encompass all the seperate tasks previously completed by the lines (it does the exact same thing basically, just makes it more modular)

  red = Math.floor(Math.random() * 256 );
  green = Math.floor(Math.random() * 256 );
  blue = Math.floor(Math.random() * 256 );
  rgbColor = 'rgb(' + red + ',' + green + ',' + blue + ')';

it may not be less space used but being able to contain all of these uses within a single function makes it easier to call again in other uses in your project, and it makes it easier to edit the functionality of your code in general.

hope this helps!

k doshi
.a{fill-rule:evenodd;}techdegree
k doshi
Full Stack JavaScript Techdegree Student 910 Points

Can you explain rgb()?

Steven Parker
Steven Parker
231,236 Points
Steven Parker
Steven Parker
231,236 Points

The built-in function "rgb()" lets you define a color by how much of each primary color (red, blue, and green) is in it. The three arguments indicate the amounts of color, using a value from 0 to 255 for each one. So for examples, "rgb(255, 0, 0)" would be solid red, and "rgb(0, 150, 150)" would be a medium blue-green.