使用 jQuery 获取点击颜色的十六进制值

$(document).ready(function() {
  $("*").click(function() {
    var color = $(this).css("background-color");
    var hexColor = rgbToHex(color);
    console.log(hexColor);
  });
});

function rgbToHex(rgb) {
  var r = parseInt(rgb.substring(4, rgb.length - 1).split(",")[0]);
  var g = parseInt(rgb.substring(4, rgb.length - 1).split(",")[1]);
  var b = parseInt(rgb.substring(4, rgb.length - 1).split(",")[2]);
  return "#" + ((1 << 24) + (r << 16) + (g << 8) + b).toString(16).slice(1);
}