The following is a simple Google Cloud Function that will validate that text entered into a field (passed to the function in the request body when called) is a valid format of an email address. The email address might not be real, but at least we aren’t accepting a string that’s incorrectly formatted:
exports.validateEmailAddress = functions.https.onRequest((req, res) => {
// Get the email address from the request body.
const emailAddress = req.body.emailAddress
// Validate the email address.
const isValid = /^[a-zA-Z0-9.!#/.test(emailAddress);
// If the email address is valid, return a success response.
if (isValid) { res.sendStatus(200); } else {
// If the email address is not valid, return an error response. res.sendStatus(400); } });
This function will validate the email address that is passed in the request body. If the email address is valid, the function will return a success response (200). If the email address is not valid, the function will return an error response (400).
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