How can I customize this javascript function?

Question

I have this javascript function that block special characters...

function validaTexto(texto)
{
    !(/^[A-zÑñ0-9]*$/i).test(texto.value) ? texto.value = texto.value.replace(/[^A-zÑñ0-9]/ig, '') : null;
}

The problem is that this function doesn't allow me to type blank spaces... how can I customize this function to allow me some other things, such as blank spaces, "," , "." , ";" and so on?

Thanks!!

nickf · Accepted Answer · 2009-03-30 13:12:41Z

2

change the regex to this:

!(/[^A-zÑñ0-9 ,\.;]*$/i)

also, the function is quite redundant in that it checks the string twice, basically saying "Does the string contain any of these characters? Yes? Ok, so search the string for these same characters and remove them. Just change it to this:

function validaTexto(texto) {
    texto.value.replace(/[^a-zñ0-9 ,\.;]/ig, '');
}

edited Mar 30, 2009 at 13:12

answered Mar 30, 2009 at 13:03

nickf

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Konstantin Tarkus · Accepted Answer · 2009-03-30 13:14:31Z

1

function validaTexto(texto) {
    texto.value.replace(/[^A-z0-9 ,\.;]/ig, '');
}

Referenes (with examples):

edited Mar 30, 2009 at 13:14

answered Mar 30, 2009 at 13:03

Konstantin Tarkus

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1 Comment

nickf Over a year ago

there's an error in the first regex. it's checking whether the entire string consists of the allowable characters, and if it does, then remove the ones which aren't allowable. also, the special "ñ" character isn't checked for here.

Community · Accepted Answer · 2017-05-23 12:01:24Z

0

Read this post:

Regular Expression: Allow letters, numbers, and spaces (with at least one letter or number)

With a bit of effort, you should be able to modify your regex to do what you need.

edited May 23, 2017 at 12:01

CommunityBot

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answered Mar 30, 2009 at 13:04

karim79

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