Regular Expression Match only first character [duplicate]

Question

I have this Regular Expression:

^([^6]*)6

I want it to match ONLY the first character and make sure its a 6. E.g.

60123456789

It should return 1 match

0123456789 should return 0 matches

How can I do this?

Currently the results it returns in my application is: 601234567890 returns an error

EDIT: This is a data annotation above my ViewModel property

[RegularExpression("^([^6]*)6", ErrorMessage = "Phone Numbers must start with a 6")]

Ari Seyhun · Accepted Answer · 2019-08-06 04:48:41Z

0

I think this should work:

'6123'.match(/^6(.+)$/)[0]

Where, '6123': is any number. For numbers starting with 6 it will match else it would return null.

Let me know if that works.

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answered Aug 6, 2019 at 4:46

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3 Comments

Sorry how do I place this in the code in my question? The input is dynamic.

@JianYA, is this a jquery plugin ? It should work if you used the following string : "^6(.+)$".

Its the .net core syntax