JavaScript jqeury why does my array not exist?

[220061]

Hello I'm trying to loop through my php array in jqeury but when I do that it days it doesn't exist. this is weird to me because I'm able to use the array to create an variable in jqeury. I need a loop that starts at the first date, and adds 1 day until it reaches the end date.
the php code

$huis_ID = $_GET['ID'];
 $arraysession=array();
 $sql = "SELECT start_datum, eind_datum FROM reserveringen WHERE huis_ID = ?";
 $stmt = $conn->prepare($sql);
 $stmt->bind_param("i", $huis_ID);
 $stmt->execute();
 $result = $stmt->get_result();
 while ($row = mysqli_fetch_array($result, MYSQLI_ASSOC)){
      
         $start_datum = date('d-m-Y', strtotime($row['start_datum']));
      
         $eind_datum = date('d-m-Y', strtotime($row['eind_datum']));
        array_push($arraysession, $start_datum, $eind_datum);
    
 }

   $array_to_json=json_encode((array)$arraysession);
   ?>

jqeury

  var dates = <?php echo $array_to_json ?>; // this part works
    console.log(dates);
    function disableDates(date) {
        var string = $.datepicker.formatDate('dd-mm-yy', date);
// this doesn't work because it doesn't understand what $array_to_json is 
        for(var i = dates; i < <?php $array_to_json ?>. length ; i++){
        
        console. log(i);
        
        }
    
        return [dates.indexOf(string) == -1];
    }

 

[OldMan]

Why are you using $array_to_json? Why not just 'dates'?

 

[Krygore]

In your variable naming the $array_to_json it includes "echo" whereas your for loop does not.

//Your var declaration and for loop
var dates = <?php echo $array_to_json ?>;
for(var i = dates; i < <?php $array_to_json ?>. length ; i++)

// Proper for loop name
var dates = <?php echo $array_to_json ?>;
for(var i = dates; i < <?php echo $array_to_json ?>. length ; i++)

Give that a shot and let us know