How to check if the checkbox is selected in Modx revo?

Question

MODX

Good afternoon, how to check if the checkbox is selected in Modx revo?

Answer 1

If the checkbox is required, just specify required, for example

<input type="checkbox" name="agree[]" value="1" required >

and all)

Answer 2

I know how to check on js
How to check in ModX Revo - no, you haven't heard of it... )
)
- drakosha.shop/opt

Answer 3

Here is an example for Formit

<div class="form-group">
    <input type="hidden" name="agree[]" value="" />
    <input type="checkbox" name="agree[]" value="1" class=""  > <span class="mf-req">*</span>
    <small>Отправляя сообщение, я принимаю <a href="terms/">пользовательское соглашение</a> и подтверждаю, что ознакомлен и согласен с <a href="privacy/">политикой конфиденциальности</a> данного сайта</small>
    <br><span class="error_agree error"></span>
</div>

And in the snippet call, we make it mandatory to fill in:

{$_modx->runSnippet('!AjaxForm', [
    'snippet' => 'FormIt',
    'hooks' => 'spam,email',
    'validate' => 'agree:required',
])}