手机号码的JavaScript验证，这将允许用户以特定的组合开头号码

Question

I have been asked to build a landing page with autoresponder SMS and therefore, need the validation to be very strict. Unfortunately I`m not a JavaScript expert.

The number should be limited to 7 digits and it should begin with a few certain combinations only, the combinations are as follows:

 050, 044, 066, 099, 073

Answer 1

You could use a regex like this:

(050|044|066|099|073)\d{5}

Matches one of the three digit combinations you specified and then 5 more digits.

If you want it to tolerate spaces, dashes, brackets and such, then you need to specify that in your question.

There are a ton of other patterns out there that might match your requirement with a little adjustment. See here for example.