js validation with validator.addMethod

Question

I want to validate a drop down box. It should show a validation message if the value in the dropdown box is null. I am in a situation of not removing null value from default option.I have the following options for dropdown list.

' '(null value by default)

option1

option2

option3

I am using regular expression to pass null value.

http://jsfiddle.net/fY2xm/

 I don't know is that correct passing null value. or any other way.

Arun P Johny · Accepted Answer · 2013-09-16 06:25:14Z

2

In the given case you need to use required validation because since the regexp rule is testing for optional condition it will always return true since the value is empty for the null option.

$("#formname").validate({
    debug: true, //prevent submission for testing
    rules: {
        textbox: {
            required: true
        }
    }
});

Demo: Fiddle

answered Sep 16, 2013 at 6:25

Arun P Johny

389k68 gold badges532 silver badges532 bronze badges

Sign up to request clarification or add additional context in comments.

1 Comment

Sam Over a year ago

hey it's not working. It consider null as a value. I tried it initially but no use.

Praveen · Accepted Answer · 2013-09-16 06:50:35Z

1

From your fiddle, your not passing values.

<select name='select'> <!--Don't forget to give name-->
        <option value=''></option>
        <option value='1'>Australia</option>
        <option value='2'>England</option>
        <option value='3'>United States</option>
    </select>

Then JS:

$("#formname").validate({
    debug: true, //prevent submission for testing
    rules: {
        'select': {
            required: true ---------------------
        }                                      |
    },                                         |
    messages: {                                |
        'select': {                            |
            required: "Select a country"--------
        }
    }
});

Check this JSFiddle

edited Sep 16, 2013 at 6:50

answered Sep 16, 2013 at 6:32

Praveen

56.7k35 gold badges137 silver badges169 bronze badges

1 Comment

Praveen Over a year ago

@Jeff Though late, glad to help you

Collectives™ on Stack Overflow

js validation with validator.addMethod

2 Answers 2

1 Comment

1 Comment

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

2 Answers 2

1 Comment

1 Comment

Your Answer

Sign up or log in

Post as a guest

Related