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

Tammi Carter
Tammi Carter
5,360 Points
Posted by Tammi Carter
Tammi Carter
5,360 Points

Instead a multi-color Loops, my code is showing 10 dots of the same color at each loop. Can anyone tell me why ?

var html = ''; var red; var green; var blue; var rgbColor;

function rgbColor() { return Math.floor(Math.Random() * 256 ); }

red = Math.floor(Math.random() * 256 ); green = Math.floor(Math.random() * 256 ); blue = Math.floor(Math.random() * 256 ); rgbColor = 'rgb(' + red + ',' + green + ',' + blue + ')'; html += '<div style="background-color:' + rgbColor + '"></div>';

for (var i = 1; i < 10; i++) { rgbColor = 'rgb(' + red + ',' + green + ',' + blue + ')'; html += '<div style="background-color:' + rgbColor + '"></div>'; } document.write(html);

3 Answers

KRIS NIKOLAISEN
KRIS NIKOLAISEN
54,970 Points

To get random colors you will have to set red, green and blue within the loop.

var html = '';
var red;
var green;
var blue;
var rgbColor;

for (var i = 1; i < 10; i++) {

  red = Math.floor(Math.random() * 256 );
  green = Math.floor(Math.random() * 256 );
  blue = Math.floor(Math.random() * 256 );

  rgbColor = 'rgb(' + red + ',' + green + ',' + blue + ')';
  html += '<div style="background-color:' + rgbColor + '"></div>';
}

document.write(html);

Otherwise you are just repeating the values set before the loop.

Steven Parker
Steven Parker
230,995 Points
Steven Parker
Steven Parker
230,995 Points

This code selects random values to create a color, and then the loop creates 10 elements using that (same) color.

To make each element a different color, you can move the lines that assign red, blue, and green inside the loop so they get picked fresh for each one.

Tammi Carter
Tammi Carter
5,360 Points
Tammi Carter
Tammi Carter
5,360 Points

I understand now! Thank you so much Steven and Kris❗️ ✌🏾 I appreciate you both.