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

Mark Bacolcol
Mark Bacolcol
7,354 Points
Posted by Mark Bacolcol
Mark Bacolcol
7,354 Points

What is the Purpose of this Variable?

In the solution video Dave has the following code:

for (var i = 0; i < 100; i += 1) {
  rgbColor = randomColor();
  html += '<div style="background-color:' + rgbColor + '"></div>';
}

My question is, what is the purpose of the "rgbColor" variable? Is there something wrong or inefficient with directly calling the function within the string? They both seem to work fine. The latter can be seen below.

for (var i = 0; i < 100; i += 1) {
  html += '<div style="background-color:' + randomColor() + '"></div>';
}

1 Answer

Jonathan Grieve
MOD
Jonathan Grieve
Treehouse Moderator 91,253 Points
Jonathan Grieve
Jonathan Grieve
Treehouse Moderator 91,253 Points

rgbcolor is probably helping limit the values return to rgbcolor ranges. Since RGB values only go up to 255 you can only get so many values before the function would break.