JQuery 语句，easyui里面的，能不能给解释下什么意思？ 函数如何调用的，谢谢了

Question

function saveUser(){
$('#fm').form('submit',{//当提交表单时候，会发生submit事件
url: url,
onSubmit: function(){
return $(this).form('validate');
},
success: function(result){
var result = eval('('+result+')');
if (result.success){
$('#dlg1').dialog('close');

$('#dg').datagrid('reload');

} else {
$.messager.show({
title: 'Error',
msg: result.msg
});
}
}
});
}

请输入用户信息：

    <form id="fm" method="post" novalidate>
        <div class="fitem">
            <label>FirstName:</label>
            <input name="firstname" class="easyui-validatebox" required="true">
        </div>
        <div class="fitem">
            <label>lastname:</label>
            <input name="lastname" class="easyui-validatebox" required="true">
        </div>
        <div class="fitem">
            <label>Phone:</label>
            <input name="phone">
        </div>
        <div class="fitem">
            <label>Email:</label>
            <input name="email" class="easyui-validatebox" validType="email">
        </div>
    </form>
</div>
<table id="dg" title="My Users" class="easyui-datagrid" style="margin:0,0,0,0"
        url="list_jsp.jsp"
        toolbar="#toolbar1" pagination="true"
        rownumbers="true" fitColumns="true" singleSelect="true">
    <thead>
        <tr>
            <th field="id" width="50">ID</th>
            <th field="firstname" width="50">First Name</th>
            <th field="lastname" width="50">Last Name</th>
            <th field="phone" width="50">Phone</th>
            <th field="email" width="50">Email</th>
        </tr>
    </thead>

只把用到的div贴了出来，谢谢各位啦。

Answer 1

表单提交，，，，，，，，，，，