javascript - password regex - raw brace is not allowed in regular expression with unicode flag -

i using jquery plugin bootstrap validator real-time frontend validations.

when add pattern/regex validation validate password (any string @ least 8 characters long), following error

unable check <input pattern='^.*{8,}$'> because pattern not valid regexp: raw brace not allowed in regular expression unicode flag

the html is

<input pattern="^.*{8,}$" class="form-control" required="required" name="user[password]" id="user_password" type="password"> 

how should write regex ?

you should use ^.{8,}$ instead.

this regex valid char - 8 times or more.

note allow spaces inside password. if want allow char not space, can use ^[^\s]{8,}$ instead.

your current regex

accept char (.) - number of times (*), , accept (the "any char number of times") @ least 8 chars {8,} (which makes no sense).