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

Posted by Derrick Johnson
Derrick Johnson
4,347 Points

Easy to read and functional solution

Any way to not have to call randomNum() 3 times?

function randomNum() {
  return Math.floor(Math.random() * 256 );
}

function createColor() {
  [r,g,b] = [randomNum(),randomNum(),randomNum()];
  document.write(`<div style="background-color:rgba(${r},${g},${b},1)"></div>`);
}

for (i=0;i<10;i++) {
  createColor();
}

1 Answer

Steven Parker
Steven Parker
229,745 Points
Steven Parker
Steven Parker
229,745 Points

The main value in defining randomNum at all is to use it multiple times.

Anything I can think of to avoid the multiple calls (like a loop) would not be as concise as the code you have already.

But you might want to add let to the line where you assign r, g, and b. to also define them