setTimeout没有给出预期的输出

Question

I have the following code but it doesn't seem to work properly. I cant understand why.

JS

var updateBoard = function() {
        $.ajax({
            type: "POST",
            url: "engine/main.php",
            data: {codes: 2},
            success: function(response) {
                console.log(response);
            }
        });
        setTimeout(updateBoard, 1000);
    };

PHP

if(isset($_POST['codes'])) {
    echo "test";
}

Answer 1

You can try with following approach:

var updateBoard = function() {
        $.ajax({
            type: "POST",
            url: "engine/main.php",
            data: {codes: 2},
            success: function(response) {
                console.log(response);
                setTimeout(updateBoard, 1000); //calling the function after 1 sec after we get the response
            }
        });

    };

updateBoard(); //calling it right away