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April 17, 2021 07:54
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Hexadecimal to RGBA
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| function hexToRgbA(hex){ | |
| let c; | |
| if(/^#([A-Fa-f0-9]{3}){1,2}$/.test(hex)){ | |
| c= hex.substring(1).split(''); | |
| if(c.length== 3){ | |
| c= [c[0], c[0], c[1], c[1], c[2], c[2]]; | |
| } | |
| c= '0x'+c.join(''); | |
| return 'rgba('+[(c>>16)&255, (c>>8)&255, c&255].join(',')+',1)'; | |
| } | |
| throw new Error('Bad Hex'); | |
| } | |
| /* | |
| hexToRgbA('#fbafff') ===> rgba(251,175,255,1) | |
| */ |
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