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reduardo7/user-name-validation.js

Created October 8, 2018 19:10
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UserName validation
Raw
user-name-validation.js
function testUser(t) {
console.info(t,
/^[a-z0-9\.\-_]+$/.test(t) && /^[^\.\-_]+/.test(t) && /[^\.\-_]+$/.test(t) && !/[\.\-_]{2,}/.test(t),
/^[a-z0-9\.\-_]+$/.test(t) , /^[^\.\-_]+/.test(t) , /[^\.\-_]+$/.test(t) , !/[\.\-_]{2,}/.test(t));
}
// Valid
testUser('foo');
testUser('foo.bar');
testUser('foo.bar-asd_123');
// Invalid
testUser('foo.-bar');
testUser('foo.');
testUser('-foo');
testUser('-foo.');
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