1.用jquery变量=<%=后台方法%>
2.首先在前端定义控件<asp:scriptmanager ID="Scriptmanager1" runat="server" EnablePageMethods="True"></asp:scriptmanager>注意EnablePageMethods属性为TRUE;
$('#ca').click(function () {
PageMethods.aaa('asdas', function (val) {
console.log(val);
})
});,
在后台的静态方法上面定义[System.Web.Services.WebMethod]