Dan06 Posted March 26, 2009 Share Posted March 26, 2009 The following code is supposed to return a variable containing text, currently the code posts the data but returns an "undefined" variable. Can someone tell me what's wrong? Thanks. function ajaxPost(params, url){ var XMLHttpRequestObj = false; if (window.XMLHttpRequest){ XMLHttpRequestObj = new XMLHttpRequest(); } else if (window.ActiveXObject){ XMLHttpRequestObj = new ActiveXObject("Microsoft.XMLHttp"); } if (XMLHttpRequestObj){ XMLHttpRequestObj.open("POST", url, true); XMLHttpRequestObj.setRequestHeader("Content-type", "application/x-www-form-urlencoded"); XMLHttpRequestObj.setRequestHeader("Content-length", params.length); XMLHttpRequestObj.setRequestHeader("Connection", "close"); XMLHttpRequestObj.onreadystatechange = function(){ if (XMLHttpRequestObj.readyState == 4 && XMLHttpRequestObj.status == 200){ var requestResponse = XMLHttpRequestObj.responseText; delete XMLHttpRequestObj; return (requestResponse); } } XMLHttpRequestObj.send(params); } } Link to comment https://forums.phpfreaks.com/topic/151307-solved-function-not-returning-value/ Share on other sites More sharing options...
shutat Posted March 27, 2009 Share Posted March 27, 2009 I had the exact same issue, and after a bit of research, I discovered it was a synchronous / asynchronous problem. Try modifying your code as function ajaxPost(params, url){ var XMLHttpRequestObj = false; if (window.XMLHttpRequest){ XMLHttpRequestObj = new XMLHttpRequest(); } else if (window.ActiveXObject){ XMLHttpRequestObj = new ActiveXObject("Microsoft.XMLHttp"); } if (XMLHttpRequestObj){ XMLHttpRequestObj.open("POST", url, false); XMLHttpRequestObj.setRequestHeader("Content-type", "application/x-www-form-urlencoded"); XMLHttpRequestObj.setRequestHeader("Content-length", params.length); XMLHttpRequestObj.setRequestHeader("Connection", "close"); XMLHttpRequestObj.send(params); var requestResponse = XMLHttpRequestObj.responseText; delete XMLHttpRequestObj; return (requestResponse); } } HTH Link to comment https://forums.phpfreaks.com/topic/151307-solved-function-not-returning-value/#findComment-795433 Share on other sites More sharing options...
Dan06 Posted April 2, 2009 Author Share Posted April 2, 2009 Thanks for the help. I followed your suggestions and got the code to work. Best, Dan Link to comment https://forums.phpfreaks.com/topic/151307-solved-function-not-returning-value/#findComment-799582 Share on other sites More sharing options...
Recommended Posts
Archived
This topic is now archived and is closed to further replies.