css hex to rgb
hexToRGB(hex, alpha) {
const r = parseInt(hex.slice(1, 3), 16);
const g = parseInt(hex.slice(3, 5), 16);
const b = parseInt(hex.slice(5, 7), 16);
if (alpha) {
return `rgba(${r}, ${g}, ${b}, ${alpha})`;
} else {
return `rgb(${r}, ${g}, ${b})`;
}
}css color hex to rgb a
hexToRGB(hex, alpha) {
const r = parseInt(hex.slice(1, 3), 16);
const g = parseInt(hex.slice(3, 5), 16);
const b = parseInt(hex.slice(5, 7), 16);
if (alpha) {
return `rgba(${r}, ${g}, ${b}, ${alpha})`;
} else {
return `rgb(${r}, ${g}, ${b})`;
}
}rgba to hex
var colorcode = "rgba(0, 0, 0, 0.74)";
var finalCode = rgba2hex(colorcode)
function rgba2hex(orig) {
var a, isPercent,
rgb = orig.replace(/s/g, '').match(/^rgba?((d+),(d+),(d+),?([^,s)]+)?/i),
alpha = (rgb && rgb[4] || "").trim(),
hex = rgb ?
(rgb[1] | 1 << 8).toString(16).slice(1) +
(rgb[2] | 1 << 8).toString(16).slice(1) +
(rgb[3] | 1 << 8).toString(16).slice(1) : orig;
if (alpha !== "") {
a = alpha;
} else {
a = 01;
}
// multiply before convert to HEX
a = ((a * 255) | 1 << 8).toString(16).slice(1)
hex = hex + a;
return hex;
}
function test(colorcode) {
console.log(colorcode, rgba2hex(colorcode));
}
test("rgba(0, 0, 0, 0.74)");
test("rgba(0, 0, 0, 1)");
test("rgba(0, 0, 0, 0)");
test("rgba(0, 255, 0, 0.5)");
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