I have an Ajax request that fetch data in database.

These data may vary in function of the action that calls the ajax request.

Each time the Ajax request is called, I want some ot these datas to be pushed in a javascript array declared outside of the Ajax function.

The problem is, each time Ajax is called, my function manage to put the wanted data in the array but erases the previous data.

Here is the script :

<script>

let myArray = [];

function fetchWeeksForViewportWidth(startDate) {

    //AJAX
    $.ajax({
        method: "GET",
            url: "{{path('days_json')}}",
            data: {
                //some data
            },
            success: function (data) {

                let trParents = document.getElementsByClassName('project-assignment');
               
                $.each(trParents, function(key, parent) {
                    let assId = parent.dataset.assignmentId;

                    myArray[assId] = [];

                    $.each(data['days'], function(key, value) {
                        
                        myArray[assId][value.code] = 0;
                        
                        //some other treatment
                        
                        if(value.code in data['game']) {
                        
                            myArray[assId][value.code] = data['game'][value.code];
                        
                        });
                    });
                });
            },
            error: function() {
                //handle error
                console.log("error")
            }
    });
}

$(document).ready( function () {


    function displayArray(){
        console.log(myArray);

        setTimeout(displayArray, 5000);
    }

    displayArray();

});

</script>

Any idea why new data don't add to the ones from previous ajax calls but keep replacing them ?