收集的网上用的ajax之chat.js文件_javascript技巧

var xmlHttp = false;
var ichatstate ;
try {
xmlHttp = new ActiveXObject("Msxml2.XMLHTTP");
} catch (e) {
try {
xmlHttp = new ActiveXObject("Microsoft.XMLHTTP");
} catch (e2) {
xmlHttp = false;
}
}
if (!xmlHttp && typeof XMLHttpRequest != 'undefined') {
xmlHttp = new XMLHttpRequest();
}


function sendmsg(){
var msgbody = escape(document.getElementById("msgbody").value);
var sendto = escape(document.getElementById("sendto").value);
var SendData = "msgbody=" + msgbody +"&sendto=" + sendto;
xmlHttp.open("POST","../ichat/sendmsg.asp",false);
xmlHttp.setRequestHeader("Content-Type", "application/x-www-form-urlencoded");
xmlHttp.onreadystatechange = function sendok(){ if (xmlHttp.readyState == 4) { } }
xmlHttp.send(SendData);
document.getElementById("msgbody").value = "";
showmsg();
}


function hot_key() {

if (window.event.keyCode==13 && window.event.ctrlKey && document.getElementById("msgbody").value != ""){sendmsg();}

}



function exitchat(){
var url = "../ichat/online.asp?action=exit&pid=" +Math.random();
xmlHttp.open("GET", url, true);
xmlHttp.send(null);
}

function intochat(){
window.ionline.location.href="../ichat/online.asp?action=intochat";
showmsg();
}

function showonline(){
var url = "../ichat/online.asp?action=showonline&pid=" +Math.random();
xmlHttp.open("GET", url, true);
xmlHttp.send(null);
}

function showmsg(){
var url = "../ichat/getmsg.asp?pid=" +Math.random();
xmlHttp.open("GET", url, true);
xmlHttp.onreadystatechange = reloadX;
xmlHttp.send(null);
}

function reloadX() {
if (xmlHttp.readyState == 4) {
var response = xmlHttp.responseText;
document.getElementById("mymsg").innerHTML = response;
document.getElementById("mymsg").scrollTop=document.getElementById("mymsg").scrollHeight;
setTimeout("showmsg();",10000);
}
}


function saveset(){
var mycolor = document.getElementById("mycolor").value;
var msgtotal = document.getElementById("msgtotal").value;
var mystate = document.getElementById("mystate").value;
var allowmsg = document.getElementById("allowmsg").value;
var closemsg;

if(document.getElementById("closemsg").checked){
closemsg = document.getElementById("closemsg").value;
}else{
closemsg = "off";
}
var SendData = "mycolor=" + mycolor + "&msgtotal=" + msgtotal + "&mystate=" + mystate + "&allowmsg=" + allowmsg + "&closemsg=" + closemsg;
xmlHttp.open("POST","../ichat/chatset.asp",false);
xmlHttp.setRequestHeader("Content-Type", "application/x-www-form-urlencoded");
xmlHttp.onreadystatechange = function sendok(){ if (xmlHttp.readyState == 4) {
alert('设定已经保存')
if(ichatstate=="open"){window.location.reload();}
} }
xmlHttp.send(SendData);

showmsg();
document.getElementById('layer_ichatset').style.display='none';


}

function openichat(){
ichatstate="open"
}

function closeichat(){
ichatstate="close"
}

function showonlineuser(){
document.getElementById('layer_online').style.display='block';

var url = "../ichat/showonline.asp?pid=" +Math.random();
xmlHttp.open("GET", url, true);
xmlHttp.onreadystatechange = reloadX2;
xmlHttp.send(null);

}

function reloadX2() {
if (xmlHttp.readyState == 4) {
var response = xmlHttp.responseText;
document.getElementById("onlineuser").innerHTML = response;
}
}

function readset(){
document.getElementById('layer_ichatset').style.display='block';

var url = "../ichat/myset.asp?pid=" +Math.random();
xmlHttp.open("GET", url, true);
xmlHttp.onreadystatechange = showset;
xmlHttp.send(null);

}

function showset() {
if (xmlHttp.readyState == 4) {
var response = xmlHttp.responseText;
document.getElementById("setplan").innerHTML = response;
}
}

function setsendto(username) {
if (username=="所有人"){
document.getElementById("sendto").value = '';
document.getElementById("talkwith").innerHTML = '所有成员';
}else{
document.getElementById("sendto").value = username;
document.getElementById("talkwith").innerHTML = username;
}
var url = "../ichat/checkuser.asp?user="+ escape(username) + "&pid=" +Math.random();
xmlHttp.open("GET", url, true);
xmlHttp.onreadystatechange = showtips;
xmlHttp.send(null);
}

function showtips() {
if (xmlHttp.readyState == 4) {
var response = xmlHttp.responseText;
document.getElementById("userstate").innerHTML = response;
}
}

function clearlog() {

if (window.confirm("您确定需要清除所有聊天记录吗?")==true)
{
var url = "../ichat/clearlog.asp?pid=" +Math.random();
xmlHttp.open("GET", url, true);
xmlHttp.send(null);
}

}


var ichatwinstate
ichatwinstate="max";

function min()
{
ichatwinstate = (ichatwinstate=="max")?"min":"max"

if (ichatwinstate=="min"){
document.getElementById('mbody').style.display='none';
document.getElementById('myichat').height= parseInt(document.getElementById('ichat_title').height);
document.getElementById('myichat').style.top = document.body.clientHeight - parseInt(document.getElementById("ichat_title").style.height) + document.body.scrollTop;
}else{
document.getElementById('mbody').style.display='block';
iresize();
}
}


function closeit(){
document.getElementById('myichat').style.display='none';
}


function iresize(){
if (ichatwinstate=="min"){
document.getElementById('myichat').style.top = document.body.clientHeight - parseInt(document.getElementById("ichat_title").style.height) + document.body.scrollTop - 1;
}else{
document.getElementById('myichat').style.top = document.body.clientHeight + document.body.scrollTop - parseInt(document.getElementById("mbody").style.height) -85;
}
}



var ey=0,ex=0,lx=0,ly=0,canDrg=false,thiso=null;
var x, y,rw,rh;

function dargit(o,e) //主函数
{
thiso = o;
canDrg = true;
if(!document.all)
{
lx = e.clientX; ly = e.clientY;
}
else
{
lx = event.x; ly = event.y;
}
if(document.all) thiso.setCapture();
try{}
catch(e){}
st(o);//置前或置后

}
document.onmousemove=function(e)
{
if(!document.all){ x = e.clientX; y = e.clientY; }else{ x = event.x; y = event.y; }
if(canDrg)
{
var ofsx = x - lx;
thiso.style.left = parseInt(thiso.style.left) + ofsx;
lx = x;
var ofsy = y - ly;
thiso.style.top = parseInt(thiso.style.top) + ofsy;
ly = y;

// 状态栏显示数据
//window.status=thiso.style.left+"left:top"+thiso.style.top+" rh:rw"+rh+"+"+rw;
}
}

document.onmouseup=function()
{
canDrg=false;//拖拽变量设为false
try{}
catch(e){}
if(document.all && thiso != null)
{
//ie下，将清捕获;
thiso.releaseCapture();
thiso = null;
}
}


function st(o)
{

var p = o.parentNode;
if(p.lastChild != o)
{
p.appendChild(o);
}
if(rh=160)
{
canDrg=false;

if(rw {
//设置关闭区域;//如果不需要可以注释掉;
//alert("关闭");
p.removeChild(o)
//removeChild(this);

}
else
{
window.status=rw+"|"+rh;
if(p.firstChild == o) return;
p.insertBefore(o, p.firstChild);
}
}
}