jquery validate plugin - How avoid from user insert white-spaces in input

Question

How avoid from user insert white-spaces in ? (I use jquery.validate.js plugin)

Example:

input not possible(because user not able insert white-spaces): John Pitt My

input possible:JohnPittMy

Edit:

Thanks

with the indexof there is a problem that the keydown is called when the key is pressed so you cant check that the .value contains a bad char or not, and if you trying to check with the keyup event, you cant interrupt the key pressing. — Gergely Fehérvári, Feb 03 '11 at 11:28

Gergely Fehérvári · Answer 1 · 2011-02-01T15:11:36.373

1

if(value.match(/^([^\s])*$/)) {return true;}

hope this good.not tested. mut mainly you should use regular expression.

preventing insert spaces:

$("#username").keypress(function(e) {
     if(e.which == 32) {
        e.preventDefault();
     }
})

edited Feb 01 '11 at 15:11

answered Feb 01 '11 at 14:18

does exist option to take every inserted char to input and check if he equal to ' '? – Ben Feb 01 '11 at 14:21
you mean only space not whitespace? – Gergely Fehérvári Feb 01 '11 at 14:24
in the input should prevent insert ' ' – Ben Feb 01 '11 at 14:27
e.preventDefault() or return false, not both – Ben Feb 01 '11 at 14:54
its like you write 10 times that will also works: e.preventDefault()e.preventDefault()e.preventDefault()e.preventDefault()e.preventDefault()e.preventDefault()e.preventDefault() – Ben Feb 01 '11 at 15:10
Why not just e.which == ' ' ? – Ben Feb 03 '11 at 09:46
what is your real problem? the code runs good but you trying to find exceptions for what? this is really annoying. what is the difference between ' ' and 32? i think nothing. what if there is return false? nothing. and please finally accept my answer if good or let me down. – Gergely Fehérvári Feb 03 '11 at 11:24

score 1 · Answer 2 · answered Feb 01 '11 at 14:19

1

There's a JQuery plugin called AlphaNumeric...

answered Feb 01 '11 at 14:19

John K.

Can i do the same with validate plugin? – Ben Feb 01 '11 at 14:24
You can actually do it with just JQuery. The unpacked version of the plugin is about 80 lines long with just 3 or 4 main functions... pretty simple if you'd like to look at the js and see how Paulo Marinas did it. – John K. Feb 01 '11 at 14:38

score 0 · Answer 3 · answered Feb 01 '11 at 14:17

0

I'll try to use a regular expression to validate the input.

A regular expression like: /([a-z]*[A-Z]+)+|([a-z]+[A-Z]*)+/ (only letters upper and lower case)

I don't know exactly how to express this regular expression.

But what you need it is any to test your input value that doesn't allow whitespaces.

answered Feb 01 '11 at 14:17

Fran Verona

How I doing that with validate jquery plugin – Ben Feb 01 '11 at 14:30
I hope this can help you http://stackoverflow.com/questions/280759/jquery-validate-how-to-add-a-rule-for-regular-expression-validation/709358#709358 – Fran Verona Feb 01 '11 at 14:32

3 Answers3