Javascript Alert并停留在当前页面上

Question

I want to create some alert with javascript and if i press ok it will stay on the current page. I have try but if i use below javascript it will give the alert and it move in other page.

echo '<script type="text/javascript">
alert("Maps not available");
window.close();
</script>';

Please help :)

Here is my detail code.

if ($decoded['VEHICLE']['RESULT'] == 'OK') {

        $arr = $decoded['VEHICLE']['DATA']; 

            if ($arr != NULL) {
                $encoded = json_encode($arr, JSON_NUMERIC_CHECK);

                $decoded_again = json_decode($encoded, TRUE);


                $line = array();
                foreach($decoded_again as $item) { 
                     array_push($line, $item['LAT'].','.$item['LON']);
                }                   
                return $line;
            } else {
                echo '<script type="text/javascript">
                        alert("Maps not available");
                        </script>';             
            }   
    } else {
        redirect('Badvertisers/showMap', 'gpsidnotfound');
    }

in earlier i use this method, it will stay on the current page, but with refreshing the page.

Modification of url helper

case 'tracknotfound'    : echo "<script>alert('Maps not Available'); 
                          document.location.href='".$uri."'; </script>\n";
            break;

and i put this one above controller

else {
        redirect('Badvertisers/showMap', 'tracknotfound');          
}   

Answer 1

Just don't use window.close(); and after you press ok will remain the page.

window.close(); will close the back after you press ok

Answer 2

Use JavaScript's confirm() :

echo '<script type="text/javascript">
checkConfirm = confirm("Maps not available");
if(!checkConfirm){
    window.close(); //This will close the page if "ok" is not selected
}
</script>';