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

Anthony Piscocama
Anthony Piscocama
4,328 Points
Posted by Anthony Piscocama
Anthony Piscocama
4,328 Points

different approach

var html = '';

var color = ['red','green','blue']

var rgbColor;

for(var i = 0; i<= 3; i++){

     color[i] = Math.floor(Math.random() * 256 );

     rgbColor = 'rgb(color)';

     html += '<div style="background-color:' + rgbColor + '"></div>';

}

document.write(html);

i got the answer already but was messing around with this, is there anyway to get this to work? or why it wouldnt?

1 Answer

KRIS NIKOLAISEN
KRIS NIKOLAISEN
54,967 Points
KRIS NIKOLAISEN
KRIS NIKOLAISEN
54,967 Points

Using the video workspace the following will produce 3 colored circles:

var html = '';
var color = [0,0,0];
var rgbColor;

for(var i = 0; i < color.length; i++){
     color[i] = Math.floor(Math.random() * 256 );
     rgbColor = 'rgb(' + color + ')';
     html += '<div style="background-color:' + rgbColor + '"></div>';
}

document.write(html);

Some differences:

  • color is initialized with numbers instead of strings
  • the condition to run was changed to i < color.length. i <= 3 will result in a color with 4 parameters on the final iteration
  • color is concatenated in the assignment to rgbColor. Otherwise your color is the string 'rgb(color)'