摘要：protected void Page_Load(object sender, EventArgs e) { this.CreateCheckCodeImage(GenerateCheckCode()); } /// <summary> /// 生成一个随机的验证码 /// </summary> /// <returns></returns> private string GenerateCheckCode() { int number; char code; string checkCode = String.Empty; System.Ran 阅读全文

摘要：JS脚步：var req; function validate() { var username=document.getElementById("txtStuNO").value; if ((username == null) || (username == "")) return; var url="SValidate.aspx?userid=" + escape(username); if(window.XMLHttpRequest) { req=new XMLHttpRequest(); } else if(window.Ac 阅读全文