ajax認証ユーザー名
var xmlHttp;
function createXMLHttpRequest() {
// ie, ns,firefox
if(window.XMLHttpRequest) {
xmlHttp = new XMLHttpRequest();
} else if (window.ActiveXObject) {
xmlHttp = new ActiveXObject("Microsoft.XMLHTTP");
}
}
function validate(field) {
//alert(document.getElementById("userId").value);
if (trim(field.value).length != 0) {
// XMLHttpRequest
createXMLHttpRequest();
var url = "user_validate.jsp?userId=" + trim(field.value) + "×tamp=" + new Date().getTime();
xmlHttp.open("GET", url, true);
// , ,
xmlHttp.onreadystatechange=callback;
// Ajax
xmlHttp.send(null);
}else {
document.getElementById("userIdSpan").innerHTML = "";
}
}
function callback() {
if(xmlHttp.readyState == 4) { //Ajax
if (xmlHttp.status == 200) { //http
document.getElementById("userIdSpan").innerHTML = "<font color='red'>" + xmlHttp.responseText + "</font>";
}else {
alert(" , =" + xmlHttp.status);
}
}
}
<input name="userId" type="text" class="text1" id="userId" size="10" maxlength="10" onkeypress="userIdOnKeyPress()" value="<%=userId %>" onblur="validate(this)"><span id="userIdSpan"></span>
user_validate.jsp
<%@ page language="java" contentType="text/html; charset=GB18030"
pageEncoding="GB18030"%>
<%@ page import="com.bjpowernode.drp.sysmgr.manager.*" %>
<%
String userId = request.getParameter("userId");
if (UserManager.getInstance().findUserById(userId) != null) {
out.println(" ");
}
%>