正则表达式以验证模式

Question

The pattern I need is below:

• MA should be the first two characters of a string
• The third character should be hyphen ( - )
• Characters 4 to 10 can be any numeric numbers ( 0-9 )
• The eleventh character should be hyphen ( - )
• Characters 12 to 15 can be any numeric numbers ( 0-9 )

Example:

MA-1234567-1234

I have tried this:

/^(MA*)[0-9]{7}([0-9]{4})$/

Answer 1

Nearly there you were missing dashes for separators and you don't need the paranthesis if you don't want to extract any of the information.

Correct regex is:

/^MA-[0-9]{7}-[0-9]{4}$/

Edit to satisfy new requirements To match both: CW291291 and MA-1234567-1234

Use the pipe symbol '|' with both patterns to match either one:

/^CW[\d]{6}|MA-[\d]{7}-[\d]{4}$/

Answer 2

The Regex you were using is missing the dashes between character sets, try this:

/^MA-\d{7}-\d{4}$/

Note that to incorporate this with an input box you would need to test against this Regex on keyup, something like this:

var re = /^MA-\d{7}-\d{4}$/;
$('#code').keyup(function() {
    if (re.test(this.value)) {
        console.log('The code is valid...');
    }
});

Example fiddle