Conditional statement based on the background color

Despite researching various topics on using background colors in if statements, I have yet to find a satisfactory solution. Whether I define an element as a variable beforehand or use rgb/rgba values, my code does not produce the desired results; it always passes straight to the else statement.


var element = $("#ARCStatusBox3EQETD");
console.log($('#ARCStatusBox1EQETD').css('backgroundColor'));
    if(element.css('background-color') == "rgb(220,20,60)") {
        $('#HomeStatus1').css("background-color", "#dc143c");
    }
    else if ($('#ARCStatusBox2EQETD').css('background-color') == '#daa520' || $('#ARCStatusBox2EQETD').css('background-color') == '#daa520' || $('#ARCStatusBox1EQETD').css('background-color') == '#daa520'){
        $('#HomeStatus1').css("background-color", "#daa520");
    }
    else {// ($('#ARCStatusBox3EQETD').css('background-color') == '#7cfc00' || $('#ARCStatusBox2EQETD').css('background-color') == '#7cfc00' || $('#ARCStatusBox1EQETD').css('background-color') == '#7cfc00'){
        $('#HomeStatus1').css("background-color", "#7cfc00");
}

I have shared my code here and unfortunately, it does not work whether I use hex codes or rgb/rgba values.

If anyone has a solution, I would greatly appreciate your help.

javascriptjqueryhtmlcss

Answer №1

Experiment:

let targetElement = $("#ARCStatusBox3EQETD");
    if(targetElement.css('background-color') == "rgb(220, 20, 60)") {
        $('#HomeStatus1').css("background-color", "#dc143c");
    }
    else if (hexToColor($('#ARCStatusBox2EQETD').css('background-color')) == '#daa520' || hexToColor($('#ARCStatusBox2EQETD').css('background-color')) == '#daa520' || $('#ARCStatusBox1EQETD').css('background-color') == '#daa520'){
        $('#HomeStatus1').css("background-color", "#daa520");
    }
    else {// ($('#ARCStatusBox3EQETD').css('background-color') == '#7cfc00' || hexToColor($('#ARCStatusBox2EQETD').css('background-color')) == '#7cfc00' || hexToColor($('#ARCStatusBox1EQETD').css('background-color')) == '#7cfc00'){
        $('#HomeStatus1').css("background-color", "#7cfc00");
}

function hexToColor(colorValue) {
    let colorParts = colorValue.match(/^rgb\((\d+),\s*(\d+),\s*(\d+)\)$/);
    delete(colorParts[0]);
    for (let j = 1; j <= 3; ++j) {
        colorParts[j] = parseInt(colorParts[j]).toString(16);
        if (colorParts[j].length == 1) colorParts[j] = '0' + colorParts[j];
    }
    return '#' + colorParts.join('');
}​

Note: Some web browsers may include spaces after the commas in the RGB values.

Answer №2

It seems like the issue could potentially be related to different browsers:

Referenced here:

Furthermore, jQuery has the ability to interpret both CSS and DOM styles for properties with multiple words. For instance, jQuery can accurately retrieve values for both .css('background-color') and .css('backgroundColor'). It's worth noting that various browsers may provide different representations of color values, such as #FFF, #ffffff, and rgb(255,255,255), which are logically equivalent but might not match textually.

Answer №3

When it comes to comparing computed colors, there may be limitations. jQuery may only provide a basic string recognition function for this purpose, as the actual computation of color values depends on how different browsers handle it.

It seems that comparing two strings is the most feasible option, rather than trying to extract and compare background colors with certainty that they are being properly calculated. To achieve such functionality, you may need to enhance your current implementation.

Due to varying color formats used by different browsers, comparing computed colors can be challenging since these formats translate into distinct string representations.

Answer №4

Make sure to include spaces between the commas in your RGB color value.

'rgb(255, 255, 255)'

Check out this functional example on CodePen https://codepen.io/example/12/

UPDATE The code snippet provided works perfectly in modern browsers like Chrome and Firefox, but may not render correctly in IE8 which does not normalize 'rgb' strings for background-color properties.

Answer №5

One issue is the various representations of colors, such as:

"white"
"rgb(255, 255, 255)"
"#FFFFFF"
"#FFF"

All of these signify the color white.

In order to compare two colors accurately, they must be in the same format for a fair comparison.

When extracting a css color with jQuery.css(), it will always be returned in RGB format.

You can utilize this by ensuring the comparison color is also specified in RGB format.

The following statement will hold true regardless of how the color white is represented:

element.css("background-color") == "rgb(255, 255, 255)"

Additionally, you can convert the background color value to hex for comparison using element.css("background-color").

Answers on this question provide methods for converting RGB to hex color codes.

Answer №6

One method to determine if two elements have the same background color is by comparing their respective background colors.

if(document.getElementById("element1").style.backgroundColor == document.getElementById("element2").style.backgroundColor)

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