js代码 RGBA颜色格式转换为16进制格式 javascript

function hexify(color) {var values = color.replace(/rgba?\(/, '').replace(/\)/, '').replace(/[\s+]/g, '').split(',');var a = parseFloat(values[3] || 1),r = Math.floor(a * parseInt(values[0]) + (1 - a)

缘_妙不可言

720人浏览 · 2021-06-01 18:20:32

缘_妙不可言 · 2021-06-01 18:20:32 发布

  function hexify(color) {
    var values = color
      .replace(/rgba?\(/, '')
      .replace(/\)/, '')
      .replace(/[\s+]/g, '')
      .split(',');
    var a = parseFloat(values[3] || 1),
      r = Math.floor(a * parseInt(values[0]) + (1 - a) * 255),
      g = Math.floor(a * parseInt(values[1]) + (1 - a) * 255),
      b = Math.floor(a * parseInt(values[2]) + (1 - a) * 255);
    return "#" +
      ("0" + r.toString(16)).slice(-2) +
      ("0" + g.toString(16)).slice(-2) +
      ("0" + b.toString(16)).slice(-2);
  }

  var myHex2 = hexify('rgba(0,0,0,0.05)'); // "#f2f2f2"