How to start setInterval loop immediately? [duplicate]

Answer 1

Use a named function and call it and assign it to the interval.

var myFnc = function() {
    // Do something every 9 seconds
};
setInterval(myFnc, 9000);
myFnc();

The other option is to use setTimeout instead.

var myFnc = function() {
    // Do something every 9 seconds
    setTimeout(myFnc, 9000);
};
myFnc();