Check for illegal character combinations with jQuery.Validate -


trying check input on html form ensure not contain &# in string. using jquery.validate http://bassistance.de/jquery-plugins/jquery-plugin-validation , have regex's need check other inputs need ensure 1 field in particular not have & , # together. trick these characters allowed in field, not together. user can put iam&some#test not put iam&#sometest.

this method checking field:

  jquery.validator.addmethod("allowed", function(value, element) {     return this.optional(element) || /^[0-9a-z\-.,:?!@$*&#]+$/i.test(value);      }, "");

assume check:

 jquery.validator.addmethod("dissallow", function(value, element) {     return this.optional(element) || /^[&#]+$/i.test(value);  }, "");

but checks make sure & , # allowed.

any ideas?

you need check whether 2 consecutive characters part of disallowed group given below

jquery.validator.addmethod("dissallow", function(value, element) {     return this.optional(element) || !(/[&#][&#]/i.test(value)); }, "some rule");

demo: fiddle


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