javascript：正则表达式问题

Question

I'm trying to validate the value of an input text field with the following code:

function onBlurTexto(value) {

    var regexNIT = "([a-zA-z]|[0-9]|[&#,@.ÑñáéíóúÁÉÍÓÚ\|\s])";

    regexCompilado = new RegExp(regexNIT);

    if (!(regexCompilado.test(value))) {
        alert("Wrong character in text :(");
        return false;
    } else {
        return true;
    }
}

But when i enter this text:

!65a

the function returns true (as you can see, the "!" character does not exist in the regular expression)

I'm not an expert in regular expressions, so i think i am missing something in the building of this reg.exp.

How can i put this regular expression to work?

Thanks in advance.

EDIT

i am so sorry ... i should remove the references to the variable "regexpValidar" before posting the issue. I modified the sample. Thanks @TecBrat

Answer 1

You should provide the start (^) and end ($) flags to your regex. Now you are matching 65a since you have alternate sets.

This should work /^([a-zA-z]|[0-9]|[&#,@.ÑñáéíóúÁÉÍÓÚ\\|\\s])+$/g

Demo: https://regex101.com/r/zo2MpN/3

Answer 2

RegExp.test looks for a match in the string, it doesn't verify that the whole string matches the regex. In order to do the latter, you need to add start and end anchors to your regex (ie '^' at the start and '$' at the end, so you have "^your regex here$").

I also just noticed that your regex is currently matching only one character. You probably want to add a '+' after the parens so that it matches one or more:

"^([a-zA-z]|[0-9]|[&#,@.ÑñáéíóúÁÉÍÓÚ\|\s])+$"

Answer 3

This is wrong. the variable you use doesn't has anything. Try this instead.

var regexCompilado = new RegExp(regexNIT);