93 lines
2.5 KiB
JavaScript
93 lines
2.5 KiB
JavaScript
/*
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Copyright 2005 Rolando Gonzalez (rolosworld@gmail.com)
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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function getRequester()
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{
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try
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{
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if(window.XMLHttpRequest)
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{
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return new XMLHttpRequest();
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}
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else if(window.ActiveXObject)
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{
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return new ActiveXObject("Microsoft.XMLHTTP");
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}
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}
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catch (e)
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{
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alert("You need a browser which supports an XMLHttpRequest Object.\nMozilla build 0.9.5 has this Object and IE5 and above.");
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}
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};
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/*
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onreadystatechange Event handler for an event that fires at every state change
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readyState Object status integer:
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0 = uninitialized
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1 = loading
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2 = loaded
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3 = interactive
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4 = complete
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responseText String version of data returned from server process
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responseXML DOM-compatible document object of data returned from server process
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status Numeric code returned by server, such as 404 for "Not Found" or 200 for "OK"
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statusText String message accompanying the status code
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*/
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function Ajax(cb)
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{
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var me = this;
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this.requester = getRequester();
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if(cb)
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this.callback = cb;
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else
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this.callback = function(req)
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{
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return eval(req.responseText);
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};
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this.requester.onreadystatechange = function(){
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switch(me.requester.readyState)
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{
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case 1:
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case 2:
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case 3:
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break;
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case 4:
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var response = me.callback(me.requester);
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break;
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default:
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alert("Error");
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break;
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}
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};
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this.state = function()
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{
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return me.requester.readyState;
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};
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this.process = function(url, parameters){
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me.requester.open("POST", url, true);
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me.requester.setRequestHeader("Content-type", "application/x-www-form-urlencoded");
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me.requester.setRequestHeader("Content-length", parameters.length);
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//me.requester.setRequestHeader("Connection", "close");
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me.requester.send(parameters);
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};
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};
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