use: Javascript / jQuery
// similar behavior as an HTTP redirect
window.location.replace("http://www.stackoverflow.com");
// similar behavior as clicking on a link
window.location.href = "http://stackoverflow.com";
Or .htaccess:
RewriteEngine On
RewriteBase /
Rewritecond %{HTTP_HOST} ^www\.yoursite\.com$ [NC]
RewriteRule ^(.*)$ https://yoursite.com/$1 [R=301,L]
and The PHP method:
$protocol = (@$_SERVER["HTTPS"] == "on") ? "https://" : "http://";
if (substr($_SERVER['HTTP_HOST'], 0, 4) !== 'www.') {
header('Location: '.$protocol.'www.'.$_SERVER ['HTTP_HOST'].'/'.$_SERVER['REQUEST_URI']);
exit;
}
Ajax
$.ajax({
type: "POST",
url: reqUrl,
data: reqBody,
dataType: "json",
success: function(data, textStatus) {
if (data.redirect) {
// data.redirect contains the string URL to redirect to
window.location.href = data.redirect;
}
else {
// data.form contains the HTML for the replacement form
$("#myform").replaceWith(data.form);
}
}
});