Regex pattern for Malaysian mobile phone Number

Question

Regex pattern ^(\+?6?01)[0|1|2|3|4|6|7|8|9]\-*[0-9]{7,8}$ in HTML5 input return error. I tested the regex, no errors on regex101.com as well as in my php code. But in HTML5 it does not function as it be. My code:

<input class="mdl-textfield__input" name="mobile_number" type="text" pattern="^(\+?6?01)[0|1|2|3|4|6|7|8|9]\-*[0-9]{7,8}$">

Error:

textfield.js:146 Pattern attribute value ^(+?6?01)[0|1|2|3|4|6|7|8|9]-*[0-9]{7,8}$ is not a valid regular expression: Uncaught SyntaxError: Invalid regular expression: /^(+?6?01)[0|1|2|3|4|6|7|8|9]-*[0-9]{7,8}$/: Invalid escape

Anyone can help me? Thanks in advance for any helps offered.

My tested regex: https://regex101.com/r/1WsVwo/1

What is the goal? `[0|1|2|3|4|6|7|8|9]` is allowing pipes is that what you want? It could just be `[0-9]` if you want numbers. Also html5 patterns are full string so the `^$` should be removed. — chris85, Jul 31 '17 at 02:20
What is `\-` supposed to mean? There's no need to escape the hyphen. — Robby Cornelissen, Jul 31 '17 at 02:21
My output for this regex to validate phone number: "+60147834432" [Malaysian phone number] — Nere, Jul 31 '17 at 02:23
`[0|1|2|3|4|6|7|8|9]` is incorrect. You mean `[012346789]`, which is better written as `[0-46-9]`. — elixenide, Jul 31 '17 at 02:23
@RobbyCornelissen I'am not expert in Regex. Just copy from PHP code for the same purpose. — Nere, Jul 31 '17 at 02:27
Chrome. I got the answer..thanks to @EdCottrell. Thanks everyone for helping me... — Nere, Jul 31 '17 at 02:38
do you see in your regex101 how it `matches a single character in the list 0|12346789` - and how you've selected PCRE rather than JAVASCRIPT flavour? — Jaromanda X, Jul 31 '17 at 02:38

elixenide · Accepted Answer · 2017-07-31T03:30:51.347

4

You have a few problems with your regex. The one causing the "invalid escape" error is that you have \-, but you do not need to (and should not) escape the hyphen. You should just have -. A proper version of your input is:

<input class="mdl-textfield__input" name="mobile_number" type="text" pattern="^(\+?6?01)[0-46-9]-*[0-9]{7,8}$">

Here's a demo.

In that example, I've also replaced the group [0|1|2|3|4|6|7|8|9] with the cleaner and more accurate [0-46-9]. In a character group (like [...]), the pipe symbol (|) is just another character, with no special meaning. So, for example, [0|1] doesn't just match 0 or 1; it also matches a literal | character, which is not what you wanted. You might find this post helpful: Reference - What does this regex mean?

edited Jul 31 '17 at 03:30

answered Jul 31 '17 at 02:28

elixenide

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It might be worth mentioning that pipe in character class doesn't have special meaning, and will be included in the character class. – nhahtdh Jul 31 '17 at 02:40
@nhahtdh Done! Thanks for the suggestion. – elixenide Jul 31 '17 at 03:31

score -1 · Answer 2 · answered Jul 31 '17 at 02:28

-1

because your syntax error, invalid escape - => -

this correct:

<input class="mdl-textfield__input" name="mobile_number" type="text" pattern="^(\+?6?01)[0|1|2|3|4|6|7|8|9]-*[0-9]{7,8}$">

answered Jul 31 '17 at 02:28

Justin Tien

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Truong Cong Hau · Answer 3 · 2017-07-31T02:51:40.107

-1

<input class="mdl-textfield__input" name="mobile_number" type="text" pattern="(\+?6?01)[0-9]{7,8}">

i change your pattern to (\+?6?01)[0-9]{7,8}

*Update: (\+?6?01)[0-46-9]-*[0-9]{7,8}

See demo

edited Jul 31 '17 at 02:51

answered Jul 31 '17 at 02:31

Truong Cong Hau

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you missed the `[0-4,6-9]` portion -and the optional `-` – Jaromanda X Jul 31 '17 at 02:33
omg, phone number of Malaysia not have number 5 :), so suprise. – Truong Cong Hau Jul 31 '17 at 02:37
no, your update only allows 8 digits after the +601, and any can be a 5 ... the format is +601 [0-4,6-9] optional - then 7 or 8 digits (0-9) – Jaromanda X Jul 31 '17 at 02:41

Regex pattern for Malaysian mobile phone Number

3 Answers3