How to escape * in regex password pattern-CodePudding

I use validate.js for form validation and have a password pattern where I would like to allow only one of the following special characters: -!@_#

Password pattern is as below:

 password1: {
  pattern:/^(?=.*[a-z])(?=.*[A-Z])(?=.*[0-9])(?=.*[-!@_# ])(?=.{8,})/
},

However, when I enter *, $ or % character as password input no error message is given. Any help would be appreciated. Thank you.

CodePudding user response：

Your pattern is absolutely right i think you have Mistake in your code. so please check code or reply the link of code

CodePudding user response：

You are not really limiting the input options of the user, your pattern says: From the starting position of string, check if it is followed by a lower case letters, then check if it is followed by a uppercase letters, followed by numbers and then some symbols.

There is nothing to limit the users input. Since .* will match any char that is not a line terminator(\n, \r etc).

You should try something like this: /^([-\w!@# ] ){8,}$/
Here \w mathces a-z, A-Z, 0-9 and underscore.

Test regex here:

CodePudding user response：

We can use [a-zA-Z0-9-!@_# ]{8,} :

<form >
<input type=text pattern='[a-zA-Z0-9-!@_# ]{8,}' required value='aaaaB1*@'>
 <button>Submit</button>
</form>