const regex = new RegExp('\\bcolou?r(?:[a-zA-Z’s]+)?\\b', 'gm')
const str = `Red is a color.
His collar is too tight or too colouuuurful.
These are bright colours.
These are bright colors.
Calorific is a scientific term.
“Your life is very colorful,” she said.
color (U.S. English, singular noun)
colour (British English, singular noun)
colors (U.S. English, plural noun)
colours (British English, plural noun)
color’s (U.S. English, possessive singular)
colour’s (British English, possessive singular)
colors’ (U.S. English, possessive plural)
colours’ (British English, possessive plural)`;
// 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