Pop-up alert message if it cannot retrieve the results from server in specified time

Question

I want to create a JavaScript function, which should popup an alert when the user starts typing in the TextBox and the server couldn't retrieve the results in 3 seconds even though it contain the results.

My current code:

function keyup(e) {
    if(timeout != null) {
        clearTimeout(timeout);
        timeout = null;
    }

    if(jq('.ui-menu-item').is(":visible")) {
        time = performaceTiming.responseStart;
        timeout = setTimeout(bluff, 3000);
    }
    else {
        timeout = setTimeout(popup, 2000);
    }
}

function bluff() {
    alert('alert box inside bluff');
}

function popup() {
    alert('the requested name could not be found, please search for other name');
}

Answer 1

you don't call the functions named bluff or popup but the undefined variables, you should add () to call the function

if(jq('.ui-menu-item').is(":visible")){
    time=performaceTiming.responseStart;

        timeout=setTimeout(bluff(),3000);}
else{
    timeout=setTimeout(popup(),2000);
}