Let's imagine that I have an array of emails and I want to filter a specific domain, like:

const emails = ['[email protected]', '[email protected]', '[email protected]']
const excludedDomain = '@hotmail';

const eligibleEmails = emails.filter(email => !emails.includes(excludedDomain));
//Works!

What If I want to exclude more than one value?

const emails = ['[email protected]', '[email protected]' '[email protected]']
const excludedDomains = ['@hotmail', '@yahoo'];

const eligibleEmails = ...

I tried to work with some(), but it returns a boolean and I need to return a new filtered array. Tried to mix filter() and some() but didn't work.

CodePudding user response：

Combine filter() with some() and includes() to check if any of the excludedDomains includes() in the current email we're filtering

const emails = ['[email protected]', '[email protected]', '[email protected]']
const excludedDomains = ['@hotmail', '@yahoo'];

const eligibleEmails = emails.filter(e => !excludedDomains.some(ee => e.includes(ee)));
console.log(eligibleEmails);

CodePudding user response：

Just use another filter on excludeDomain inside your original filter.

const emails = ['[email protected]', '[email protected]', '[email protected]'];
const excludedDomains = ['@hotmail', '@yahoo'];

const filtered = emails.filter(email => 
  excludedDomains.filter(ed => email.includes(ed)).length === 0
)

console.log(filtered); // [ '[email protected]' ]