25 lines
539 B
JavaScript
25 lines
539 B
JavaScript
import dns from 'dns';
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export function isEmailDomainValid(email) {
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const domain = email.split('@')[1];
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return new Promise((resolve, reject) => {
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dns.lookup(domain, (err, address) => {
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if (err) {
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reject(err);
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}
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else {
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const isIPAddress = /^\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}$/.test(address);
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resolve(isIPAddress);
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}
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});
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});
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}
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export function isValidEmail(email) {
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const emailRegex = /\S+@\S+\.\S+/;
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return emailRegex.test(email);
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}
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export function isNumber(x) {
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return /^-?[\d.]+(?:e-?\d+)?$/.test(x);
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} |