如何使jQuery验证程序远程触发errorPlacement？

Question

Can anyone please tell me how I can get the jQuery Validator to call the errorPlacement handler when a remote function fails? I have provided a short example:

Cliff Notes: According to their documents, I have to output JSON, but I must have missed something because do I just echo out json_encode, or do I provide a key like echo json_encode(array('result' => 0)) as it says in this block of text .

JS:

var validator = $("form#signup").validate({
    onfocousout: true,
    rules: {
        email: {
            required: true,
            email: true,
            remote: {
                type: "POST",
                url: 'test.php',
                data: {
                    email: function() {return $("#email").val();}
                }
            }
        },
        errorPlacement: function(error, el) {
            console.log('ERR' + $(el).attr('id'));
        }
    }
});

PHP:

<?php
echo false; // This should allow the errorPlacement to call shouldn't it?

Answer 1

I think you need to echo false as a string from your PHP script:

<?php
echo 'false';

I've created a jsfiddle based on your question. The pastebin link just returns the word "false".