occhat_recivemsg.js

关于在线聊天的程序,类似于QQ聊天,希望大家喜欢

// JavaScript Document for recive Msg
function ocChat_reciveMsg(sendUserId,reciveUserId,tableId,alertId){
	ocChat_msgTableId=tableId;
	ocChat_alertId=alertId;
	ocChat_onReciving(alertId);
	
	var sendObj=document.getElementById(sendUserId);
	var reciveObj=document.getElementById(reciveUserId);
	var sendUser=sendObj.innerHTML;
	var reciveUser=reciveObj.innerHTML;
	ocChat_reciveUser=reciveUser;
	
	var url = "getMsgs.asp?sendUser=" + escape(sendUser) + "&reciveUser=" + escape(reciveUser);
	xmlHttp.open("GET", url, true);
	xmlHttp.onreadystatechange = ocChat_reciveReady;
	xmlHttp.send(null);		
}

function ocChat_reciveReady(){
	if (xmlHttp.readyState == 4) {
		var response = xmlHttp.responseText;
		if(response=="ocChat_Err101"){
			setTimeout("ocChat_onBlur('" + ocChat_alertId + "')",2000);
		}else{
			var tableObj=document.getElementById(ocChat_msgTableId);
			var divObj=tableObj.parentNode;
			
			try{
				var td=document.createElement("td");
				var tr=document.createElement("tr");
				var tbody=document.createElement("tbody");

				td.innerHTML="<b>" + ocChat_reciveUser + ": </b><font>" + response + "</font>"
				tr.appendChild(td);
				tbody.appendChild(tr);
				tableObj.appendChild(tbody);
		
				divObj.scrollTop=divObj.scrollHeight;
				ocChat_onBlur(ocChat_alertId);
				ocChat_playIt();	//sound alert
			}catch(exception){}			
		}
	}	
}