按钮的Ajax请求时一次点击两次提交的解决方法

$(function () {
$('#submit').click(function () {
var createGenreForm = $('#createGenreForm');
if (createGenreForm.valid()) {
var obj = {
Name: $('#Name').val(),
Description: $('#Description').val()
};
var jsonSerialized = JSON.stringify(obj);
$.ajax({
type: "POST",
url: createGenreForm.attr('action'),
dataType: "json",
contentType: "application/json; charset=utf-8",
data: jsonSerialized,
success: function (result) {
alert(result.Message);
},
error: function (error) {
alert("There was an error posting the data to the server: " + error.responseText);
}
});
}
});
});