// ******************************************************************************** // JavaScript functions to handle generic browser events for most browsers // Also uses AJAX to post email requests to server objects. // ******************************************************************************** // The INIT function which MUST BE CALLED from the body tag of the host page i.e. // function init() { // Check if the subscribe to email button has been clicked img=window.document.getElementById("emailSubscribeButton"); img.clicked = false; img.onclick=doSubmit; } function doSubmit() { // **************************************************************************************** // Here we proceed after the email button/image has been clicked (from the INIT() function) // to retrieve the text entries on the page such as email, from and a re-direct page if // required (leaving blank just comes up with an alert window to confirm) // **************************************************************************************** // Setup the variables to hold the current entered email details on the page var email = document.all.email.value; var emailsendto = document.all.sendto.value; var returnurl = document.all.resulturl.value; // Check regex to ensure we have a valid email address format var filter = /^([a-zA-Z0-9_\.\-])+\@(([a-zA-Z0-9\-])+\.)+([a-zA-Z0-9]{2,4})+$/; if (filter.test(email)) { // All ok } else { alert('Incorrect email address. Please type again.'); return; } // Setup the AJAX functions xmlHttp=null; if (window.XMLHttpRequest) { xmlHttp=new XMLHttpRequest(); } else if (window.ActiveXObject) { xmlHttp=new ActiveXObject("Microsoft.XMLHTTP"); } if (xmlHttp==null) { alert ("Browser does not support HTTP AJAX Requests"); return; } // Now send the details through to the desired server page to process the email send request //var url="phpmail.php"; This one is an example of calling PHP var url="ASPcdoMailer.asp"; url=url+"?email=" + email + "&sendto=" + emailsendto + "&resulturl=" + returnurl; xmlHttp.onreadystatechange=ajaxPostback; xmlHttp.open("GET",url,true) xmlHttp.send(null) } function ajaxPostback() { if (xmlHttp.readyState==4 || xmlHttp.readyState=="complete") { alert(xmlHttp.responseText); } }