Adjusting the backdrop hues

My goal is to change the background colors of my website by cycling through all possible combinations. However, I'm encountering issues with my code and can't figure out what's wrong.


var red = 0;
var green = 0;
var blue = 0;

do {
    do {
        do {
            blue = blue + 1;
            document.body.bgcolor = "red, green, blue";
        } while (blue < 255);
        
        green = green + 1;
        document.body.bgcolor = "red, green, blue";
    } while (green < 255);

    red = red + 1;
    document.body.bgcolor = "red, green, blue";
} while (red < 255);

Answer №1

This paragraph:

document.body.backgroundcolor = "x,y,z";

presents a few major issues:

  1. It's setting the value to "x,y,z", rather than using variables x, y, and z.

  2. The correct property to modify is either

    document.body.style.backgroundColor
    or (in older code) document.body.bgColor (please note the capitalization of C).

  3. In CSS, numerical color codes must begin with # to distinguish them from color names.

You should convert variables x, y, and z to hexadecimal format (tip: use x.toString(16), remembering to include a leading 0 for values less than 16), and then assign them to backgroundColor preceded by a #.


Yet, remember that most browsers won't update the page until all JavaScript operations have finished executing. Since your script runs through nested loops without pausing, you won’t see any intermediate changes. Think about incorporating setTimeout for better results!

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