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I`m using jQuery form validation plugin and and use regex to validate one field. Here is some code:

$.validator.addMethod('regex',
            function(value, element, regexp) {
            var check = false;
            var re = new RegExp(regexp);
            return this.optional(element) || re.test(value);
             },
    "" );    


<input id="school" name="school" type="text" style="float: left" />


$("#school").rules("add", { regex: "^[a-zA-Z0-9]*$"});

But I want to use \ and ] symbols in this field. Escaping these characters with backslashes doesn`t help, even with 3 or 4 backslashes as mentioned here

Edited
Thanks. It was really my mistake. I updated regex to validate different symbols (also backslash and ] )

$("#school").rules("add", { regex: /^[a-zA-Z0-9\',!;\<>\?\$\^:\\\/`\|~&\" @#%\*\{}\(\)\[\]_\+\.\s=-]*$/ });

it works now.

Community
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Iurii Dziuban
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1 Answers1

1

This one should work:

'^[a-zA-Z0-9\\]\\\\]*$'

Two backlashes before ] gives one backslash in final string, and this backslash escapes ] sign. Four backslashes produces two backslashes (two escaped backslashes) in final string, and this two backlashes passed to RegExp constructor gives one escaped backslash.

Here is simple demo: http://jsfiddle.net/CsQn7/1/

Mateusz W
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