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

Saqib Ishfaq
Saqib Ishfaq
13,912 Points

why is it not working??? wot m i doing wrong

var html = ''
var randomColor;
var rgbColor;

function getColor(){
 randomColor = Math.floor(Math.random() * 256 );
 rgbColor = "rgb(" + randomColor + "," + randomColor + "," + randomColor + ")";
  return rgbColor;
}
for (var i =0; i<100; i+=1){

html += '<div style="background-color:' + rgbColor + '"></div>'
}
document.write(html);

5 Answers

Steven Parker
Steven Parker
229,920 Points

There are a few issues here:

  • the variable rgbColor is defined but never assigned
  • the variable "randomColor" is defined once in the function but used 3 times
  • the function getColor is defined but never used
  • the loop builds a string using rgbColor which was never assigned
  • if dimensions are not being set by CSS, empty div elements will have no height and not be visible
Saqib Ishfaq
Saqib Ishfaq
13,912 Points

is this wot u mean by assigning? i used "randomColor" 3 times to make it rgb color....is this not how we get 3 values?

var html = ''
var randomColor;
var rgbColor;

function getColor(){
 var randomColor = Math.floor(Math.random() * 256 );
 var rgbColor = "rgb(" + randomColor + "," + randomColor + "," + randomColor + ")";
  return rgbColor;
}
for (var i =0; i<100; i+=1){

html += '<div style="background-color:' + rgbColor + '"></div>'
}
document.write(html);
Steven Parker
Steven Parker
229,920 Points

The "assignment" I'm referring to is where you use the math formula to give randomColor a value. But then when you use that value 3 times each one will be the same. This will give you a color that will always be a shade of grey, is that what you want?

Saqib Ishfaq
Saqib Ishfaq
13,912 Points

nops, m trying to complete the challenge and come up with different color each time i load or atleast 3 different colors. and get rid of extra code mentioned in the challenge:/

Steven Parker
Steven Parker
229,920 Points

I suspected you intended them to be different, and that's why I listed re-using the same value 3 times as one of the issues.

You say this is for a challenge? But the button in the upper right links to a video.

Saqib Ishfaq
Saqib Ishfaq
13,912 Points

Yeh the video was to reduce the code using function n loops. Completed the 1st task but on 2nd task it got bit complicated.I just saw the video n saw the issue I was having. Would hv liked to sort it on my own tho:/

Steven Parker
Steven Parker
229,920 Points

I didn't give you any answers, just hints about the issues. You'll still be resolving it yourself.

Hunter Shaw
Hunter Shaw
2,187 Points

I solved your problem; however, I will not give you my code. Giving answers away doesn't help you learn. However, I can say that you're missing an argument. How are you suppose to call the function and return a value if the return is rbgColor. Your function doesn't know to return it. The whole point of the function you're using is to return the value.