背景のカラーチェンジ

color_change.js

let htmlcode = `
    <span class='color_code' style='color:#262a2e' data-color-code='#262a2e'>■</span>
    <span class='color_code' style='color:#192734' data-color-code='#192734'>■</span>
    <span class='color_code' style='color:#1c483b' data-color-code='#1c483b'>■</span>
    <span class='color_code' style='color:#bf7800' data-color-code='#bf7800'>■</span>
    <span class='color_code' style='color:#83094f' data-color-code='#83094f'>■</span>
`;
let old_color = "#262a2e";
document.getElementById("site_description").insertAdjacentHTML("afterend", htmlcode);
let ColorCodeObject = document.querySelectorAll(".color_code");
for (const key in ColorCodeObject) {
    if (Object.hasOwnProperty.call(ColorCodeObject, key)) {
        const element = ColorCodeObject[key];
        element.addEventListener("click", function (element) {
            for (let ii = 0; ii < document.styleSheets.length; ii++) {
                if (String(document.styleSheets[ii].href).match(/mag_tcd036-child\/style\.css\?ver=/)) {

                    for (let i = 0; i < document.styleSheets[ii].cssRules.length; i++) {
                        let element_css_code = document.styleSheets[ii].cssRules[i];
                        let rgbfn = function(hex){
                            let red = parseInt(hex[1]+hex[2],16);
                            let green = parseInt(hex[3]+hex[4],16);
                            let blue = parseInt(hex[5]+hex[6],16);
                            return `rgb(${red}, ${green}, ${blue})`;                            
                        };
                        try {
                            if (element_css_code.style.backgroundColor === rgbfn(old_color)) {
                                //console.log(rgbfn(old_color));
                                element_css_code.style.backgroundColor = rgbfn(ColorCodeObject[key].getAttribute("data-color-code"));
                            }
                        } catch (error) {
                            //console.log("not backgroundColor");
                        }
                    }
                    old_color = ColorCodeObject[key].getAttribute("data-color-code");
                }
            }
        });
    }
}