const regex = /(?:^|(?<=\s))(?!charlie@outrunthebear\.co\.uk)(\w[\w\.]*@\w+\.[\w\.]+)\b/gm;
// Alternative syntax using RegExp constructor
// const regex = new RegExp('(?:^|(?<=\\s))(?!charlie@outrunthebear\\.co\\.uk)(\\w[\\w\\.]*@\\w+\\.[\\w\\.]+)\\b', 'gm')
const str = `
I need a regular expression that will match email addresses, but exclude specific email addresses from the match
e.g. do not match;
charlie@outrunthebear.co.uk
sponge.bob@example.com
jim.bob@example.com
billy.bob@example.com
match all other email addresses;
may be test@example.com or a@b.com a.b.c@d.e.f.com
no.body@example.com
another.test.email@example.com
and.another.one@example.com.au`;
// 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