问如何重用函数10秒。Javascript

EN

function inspect(){ 
    $.ajax({
        type: "GET",
        url: 'addtest.json',
        dataType: "JSON",
        async : false,
        success: function(response) {
            for (n=0; n<20; n++){
                var result = (response[n][3])
                    if(result == "Done"){

                        document.getElementById('status').innerHTML = "Test OK"

                        n=20;
                    }
            }
        },

        error: function(response) {
            alert("No File")
        }
    });
}