const regex = /^hsla?\((?:(-?\d+(?:deg|g?rad|turn)?),\s*((?:\d{1,2}|100)%),\s*((?:\d{1,2}|100)%)(?:,\s*((?:\d{1,2}|100)%|0(?:\.\d+)?|1))?|(-?\d+(?:deg|g?rad|turn)?)\s+((?:\d{1,2}|100)%)\s+((?:\d{1,2}|100)%)(?:\s+((?:\d{1,2}|100)%|0(?:\.\d+)?|1))?)\)$/gmi;
// Alternative syntax using RegExp constructor
// const regex = new RegExp('^hsla?\\((?:(-?\\d+(?:deg|g?rad|turn)?),\\s*((?:\\d{1,2}|100)%),\\s*((?:\\d{1,2}|100)%)(?:,\\s*((?:\\d{1,2}|100)%|0(?:\\.\\d+)?|1))?|(-?\\d+(?:deg|g?rad|turn)?)\\s+((?:\\d{1,2}|100)%)\\s+((?:\\d{1,2}|100)%)(?:\\s+((?:\\d{1,2}|100)%|0(?:\\.\\d+)?|1))?)\\)$', 'gmi')
const str = `hsl(123deg, 100%, 0%)
hsl(123, 100%, 0%)
hsl(123rad 100% 0%)
hsla(123grad, 100%, 0%, 0)
hsla(-123turn 100% 0% 1)
hsla(1 100% 0% 50%)
bad ones
hsl(123deg, 100%, 0%)
hsl(123, 100%, 0%)
hsl(123ad 100% 0%)
hsla(123grd, 100%, 0%, 0)
hsla(-123trn 100% 0% 1)
hsla(1 a% 0% 50%)
`;
// Reset `lastIndex` if this regex is defined globally
// regex.lastIndex = 0;
let m;
while ((m = regex.exec(str)) !== null) {
// This is necessary to avoid infinite loops with zero-width matches
if (m.index === regex.lastIndex) {
regex.lastIndex++;
}
// The result can be accessed through the `m`-variable.
m.forEach((match, groupIndex) => {
console.log(`Found match, group ${groupIndex}: ${match}`);
});
}
Please keep in mind that these code samples are automatically generated and are not guaranteed to work. If you find any syntax errors, feel free to submit a bug report. For a full regex reference for JavaScript, please visit: https://developer.mozilla.org/en/docs/Web/JavaScript/Guide/Regular_Expressions