jQuery Validation Plugin – Remote Method帮助

remote method

remote( options )Returns:Boolean

Description: Requests a resource to check the element for validity.

remote( options )
- options
  
  Type:
  Object
  
  For the URL of the resource to request for serverside validation (String) or options to fully customize the request, seejQuery.ajax for details.
  
  These options deep-extend the defaults (dataType:"json", data:{nameOfTheElement:valueOfTheElement}). Any options you provide will override the defaults.

The serverside resource is called via jQuery.ajax (XMLHttpRequest) and gets a key/value pair corresponding to the name of the validated element and its value as a GET parameter. The response is evaluated as JSON and
must be true for valid elements, and can be any false,undefined ornull for invalid elements, using the default message; or a string, eg."That name is already taken, try peter123 instead" to display
as the error message.

For more examples, take a look the
marketo demo and the
milk demo.

Examples:

Example: Makes the email field required, an email and does a remote request to check if the given address is already taken.

$("#myform").validate({
    rules: {
        email: {
            required: true,
            email: true,
            remote: "check-email.php"
        }
    }
});

Example: Makes the email field required, an email and does a remote request to check if the given address is already taken. In addition, the http method is set to “post” and the username is sent alongside the email address.

$("#myform").validate({
    rules: {
        email: {
            required: true,
            email: true,
            remote: {
                url: "check-email.php",
                type: "post",
                data: {
                    username: function () {
                        return $("#username").val();
                    }
                }
            }
        }
    }
});

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