[AJAX] definitions des directives setRequestHeader & send
Bonjour
je debute avec ajax et je n'arrive pas à comprendre les 2 lignes en rouge si dessus.
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|
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" dir="ltr" lang="en">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<script language="JavaScript">
function submitForm()
{
var req = null;
document.ajax.dyn.value="Started...";
if(window.XMLHttpRequest)
req = new XMLHttpRequest();
else if (window.ActiveXObject)
req = new ActiveXObject(Microsoft.XMLHTTP);
req.onreadystatechange = function()
{
document.ajax.dyn.value="Wait server...";
if(req.readyState == 4)
{
if(req.status == 200)
{
document.ajax.dyn.value="Received:" + req.responseText;
}
else
{
document.ajax.dyn.value="Error: returned status code " + req.status + " " + req.statusText;
}
}
};
req.open("POST", "data.php", true);
req.setRequestHeader("Content-Type", "application/x-www-form-urlencoded");
req.send(null);
}
</script>
</head>
<body>
<FORM name="ajax" method="POST" action="">
<p>
<INPUT type="BUTTON" value="Submit" ONCLICK="submitForm()">
</p>
<p>
<input type="text" name="dyn" size="32" value="">
</p>
</FORM>
</body>
</html> |
Merci d'avance pour votre aide.
