Regex Case Insensitive with input match

问题

I am trying to make validation for an html input by assigning via javascript a regex using the following code:

$("#"+field.field_id).attr("data-validation",'custom');
$("#"+field.field_id).attr("data-validation-regexp",field.regex);

If I set the regex to

^(Server (\d{1,2}))$

Then it works only with input 'Server ..' But i want the input Server to work with case insensitive. Like 'SERVER' or 'sErver'...... I tried to put ^(Server (\d{1,2}))$/i but it doesn't work. Any ideas ?

回答1:

You can use:

^([Ss][Ee][Rr][Vv][Ee][Rr] (\d{1,2}))$

to make it case insensitive.

There is no support of i (ignore case flag) in input pattern since it is compiled with the global, ignoreCase, and multiline flags disabled.

回答2:

This doesn't work, because you're not using open slash for regex:

^(Server (\d{1,2}))$/i

But this should work:

/^(Server (\d{1,2}))$/i

来源：https://stackoverflow.com/questions/27858038/regex-case-insensitive-with-input-match