请问一个js return的问题

Question

        function CheckCodeInsert() {
            var code = $("#checkcode").val();
            $.ajax({
                url: "Ajax/CheckCodeInsert.aspx?Code=" + code,
                type: "GET",
                timeout: 30000,
                success: function(data) {
                    if (data == "1") {
                        //                $.ajax({ 
                        //                  url 
                        //                    url: "/Ajax/CheckCodeInsert.aspx?Code=" + code,
                        //                }); 
                        return true;
                    }
                    else {
                        alert("验证码错误");
                        return false;
                    }
                }
            });        }<asp:Button ID="button" runat="server" OnClientClick="return CheckCodeInsert();" onclick="Button1_Click1" 
                                  Text="我已阅读以下条款并同意注册" Width="240px" />
提示错误了,也出现验证码错了,可是还是执行.net onclick事件了是怎么回事呢大师们

Answer 1

ajax 是异步执行，js 依次执行语句，在 ajax 返回前 CheckCodeInsert 就已经执行完毕了！return CheckCodeInsert(); // undefined

Answer 2

同意楼上的观点,那你Button1_Click1的调用要在success:function(){}内进行了

Answer 3

  在success里掉用啊 $("#button").bind("click",Button1_Click1)