Answers for "javascript add alpha to hex"

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javascript add alpha to hex

function addAlpha(color: string, opacity: number): string {
    // coerce values so ti is between 0 and 1.
    const _opacity = Math.round(Math.min(Math.max(opacity || 1, 0), 1) * 255);
    return color + _opacity.toString(16).toUpperCase();
}
addAlpha('FF0000', 1); // returns 'FF0000FF'
addAlpha('FF0000', 0.5); // returns 'FF000080'

Posted by: Guest on November-29-2020

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