JavaScript reads XM child nodes without a refresh example (javascript,xml,php)

The following JavaScript function is used to make no refresh to determine whether the user name and password are correct

<script language= "JavaScript" >

function login_sussess () {

var flag = false;

var user,psw;

user = Form1.user.value;

PSW =form1.psw.value;

Coder = Form1.coder.value;

form1.submit2.disabled = "false";

document.getElementById ("Check_result_title"). InnerHTML = "landing ...";

var oxmldoc = new ActiveXObject (' MSXML ');//Creating an XML Document Object

sURL = "js/login_go.php?user=" +user+ "&psw=" +psw+ "&coder=" +coder//load data page

Oxmldoc.url = sURL; Load data to object URL

var oroot = oxmldoc.root;//Read root node

Oitem = Oroot.children.item (0);

If you also want to read Oitem's child nodes, you should oItem.children.tiem (i), and so on

if (Oitem.text = = ' 1 ') {

document.getElementById ("Check_result_title"). InnerHTML = "username or password is incorrect";

form1.submit.disabled = "true";

}else if (Oitem.text = = ' 2 ') {

document.getElementById ("Check_result_title"). InnerHTML = "Incorrect verification code";

form1.submit.disabled = "true";

}else if (Oitem.text = = ' 3 ') {

document.getElementById ("Check_result_title"). InnerHTML = "landed successfully,";

Location.href = "index.php";

}

}

</script>

The following section is the source code of login_go.php:

<?php

Require_once (".. /class/_conn.php ");

if (Isset ($_request["user"]) &&$_request["user"]) $user = Trim ($_request["user"]);

if (Isset ($_request["PSW") &&$_request["PSW"]) $user = MD5 (Trim ($_request["PSW"));

if (Isset ($_request["coder"]) &&$_request["coder"]) $coder = Trim ($_request["coder"]);

$flag = ' 1 ';

Print ("<?xml version= ' 1.0 ' encoding= ' gb2312 '?>");

Print ("<plan>");

$result = $connection->my_query ("SELECT * from ' Members ' where username = ' $user ' and password = ' $PSW '", $connection-&G T;conn);

if ($row = $connection->my_array ($result)) {

if ($_session["code"]! = $coder) {

$flag = ' 2 ';//Incorrect verification code

}else{

$flag = ' 3 ';//Login Successful

}

}

$connection->my_mysql_close ($result);

echo "<result> $flag </result>";

Echo ' </plan> ';

?>

The XML content for this section of PHP output is:

<?xml version= "1.0" encoding= "gb2312"?>

<plan>

<result>1</result>

</plan>

JavaScript reads XM child nodes without a refresh example (javascript,xml,php)