Question

I have a form generating dynamic cookie, say:

webform-62[1234356]

62[1234356] can be any number. I need to check if cookie with name starting with “webform-” exists using some wildcard check. Below is not working

if( $.cookie('webform\\S*') == null ) { 
alert('no cookie');
}

Any hint would be very much appreciated.

Thanks.

Answer 1

Use this:

if (document.cookie.search(/\bwebform-\S*=/) < 0) {
    // no cookie
}

document.cookie contains a list of cookies on the current domain/path in the following format:

<cookie-name>=<cookie-value> (each name=value pair is separated by a ;).

So the given code just searches for a cookie with a name of the form webform-\S* in this list. The search call returns a number upper than or equal to 0 if the cookie is found.