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¿Cómo convertir una cadena de color hexadecimal con canal alfa en una cadena rgba?

¿Existe una función para convertir una cadena de color hexadecimal con canal alfa en una cadena rgba?

Por ejemplo '#CC000000' (negro con 80 % de transparencia) en 'rgba(0,0,0,0.8)'

about 4 years ago · Juan Pablo Isaza
1 answers
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Lo siguiente hizo el truco:

 public alphaHexToRgba(alphaHexString) { const rgb = this.hexToRgb(`#${alphaHexString.substring(3, 9)}`); const alpha = alphaHexString.substring(1, 3); const normalize = (val, max, min) => { return (val - min) / (max - min); }; const percentage = Math.round(normalize(parseInt(alpha, 16), 255, 0) * 100) / 100; const res = [...rgb, percentage]; return `rgba(${res})`; }
about 4 years ago · Juan Pablo Isaza Report
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