104 lines
2.1 KiB
JavaScript
104 lines
2.1 KiB
JavaScript
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s////////////////////////////////////////////////////////////////////////////////
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var xmlHttp;
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function stateCallback() {
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var stat, rstate;
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if( !xmlHttp ) return;
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try {
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rstate = xmlHttp.readyState;
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} catch (err) {
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alert(err);
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}
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switch( rstate )
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{
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// uninitialized
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case 0:
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// loading
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case 1:
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// loaded
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case 2:
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// interactive
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case 3:
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break;
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// complete, so act on response
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case 4:
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// check http status
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try {
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stat = xmlHttp.status;
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}
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catch (err) {
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stat = "xmlHttp.status does not exist";
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}
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if( stat == 200 ) // success
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{
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AJAX_response(xmlHttp.responseText);
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}
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// loading not successfull, e.g. page not available
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else { }
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}
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}
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function init_AJAX()
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{
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var new_xmlHttp;
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try
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{
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// Internet Explorer
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if( window.ActiveXObject )
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{
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for( var i = 5; i; i-- )
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{
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try
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{
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// loading of a newer version of msxml dll (msxml3 - msxml5) failed
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// use fallback solution
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// old style msxml version independent, deprecated
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if( i == 2 ) {
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new_xmlHttp = new ActiveXObject("Microsoft.XMLHTTP");
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}
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// try to use the latest msxml dll
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else {
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new_xmlHttp = new ActiveXObject( "Msxml2.XMLHTTP." + i + ".0" );
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}
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break;
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}
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catch( excNotLoadable ) {
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new_xmlHttp = false;
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}
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}
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}
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// Mozilla, Opera und Safari
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else if( window.XMLHttpRequest ) {
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new_xmlHttp = new XMLHttpRequest();
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}
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}
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catch( excNotLoadable ) {
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new_xmlHttp = false;
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}
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new_xmlHttp.onreadystatechange = stateCallback;
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xmlHttp = new_xmlHttp;
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}
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function AJAX_get(url) {
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if( xmlHttp ) {
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xmlHttp.abort();
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xmlHttp = false;
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}
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init_AJAX();
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xmlHttp.open("GET", url, true);
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xmlHttp.send(null);
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}
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////////////////////////////////////////////////////////////////////////////////
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function setTextById(element, text) {
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document.getElementById(element).firstChild.nodeValue = text;
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}
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