I have a field where the CPF, CNPJ and Other Document can be written. The field is unmasked, while the "Other Document" can be any number or letter.
How can I make these validations in jQuery ? Make sure the user typed in without a mask or a mask and / or a document.
You will only be able to do this when the courses leave the field, before that you can not predict what will be inserted: CPF, CNPJ or Other Document.
I would do so: In%% of - field output - would take text content, filter only numbers and if you have 11 digits would format as CPF, if you have 14 as CNPJ, otherwise, you would not format.
It seems from your description that any string that contains numbers or letters is valid. In this case a simple match is enough:
var valido = this.value.match(/^[\d\w]+$/);
Example:
var input = document.querySelector('input');
var res = document.getElementById('res');
input.addEventListener('keyup', function() {
var valido = this.value.match(/^[\d\w]+$/);
res.innerHTML = valido ? 'valido' : 'invalido';
});<input type="text" placeholder="escreve algo aqui...">
<div id="res"></div>There is a well-known jQuery plugin called jQuery Validation Plugin which facilitates a lot of validation processes using jQuery. You can take a look at their documentation to learn how to use here .