如何在调用服务器端之前先在 jQuery 中进行验证

Question

目前，我使用的是http://jqueryvalidation.org/，我有这个表格

<form action="AddDefectToDatabaseServlet" method="post" id="myForm">

然后在我的js脚本中

$(document).ready(function() {

$('#myform').validate({ // initialize the plugin
    rules: {
        title: {
            required: true
        },
        description: {
            required: true
        }
    },
    errorPlacement: function(){
        return false;
    },
    submitHandler: function (form) { // for demo
        alert('valid form submitted'); // for demo
        return false; // for demo
    }
 });

});

但我的问题是，即使验证错误，它也会一直到服务器端，对不起，我是这个插件的新手，

Answer 1

您缺少一个 invalidHandler。

来自文档 - http://jqueryvalidation.org/validate

invalidHandler
Type: Function()
Callback for custom code when an invalid form is submitted. Called with an event object as the first argument, and the validator as the second.