jQuery String Contains Manipulation?
This is done with indexOf, however it returns -1 instead of False if not found.
Syntax string.indexOf(searchValue[, fromIndex])
Parameters searchValue - A string representing the value to search for. fromIndex - The location within string to start the search from. It can be any integer between 0 and the length of string. The default value is 0.
Return
The first index in string at which the start of the substring can be found, or -1 if string does not contain any instances of the substring.
As Paolo and cletus said, you can do it using indexOf().
Valid to mention is that it is a javascript function, not a jQuery one.
If you want a jQuery function to do this you can use it:
jQuery.fn.contains = function(txt) { return jQuery(this).indexOf(txt) >= 0; }
The indexOf operator works for simple strings. If you need something more complicated, it's worth pointing out that Javascript supports regular expressions.