Why do we need to pass a function to Javascript setTimeOut https://developer.mozilla.org/en-US/docs/Web/API/WindowTimers.setTimeout
Why cannot we do sg simple like
setTimeOut(1000);
Can I pass an empty or nonexistant function in there?
I want to simply wait in a for loop after each iteration.
Javascript is single threaded. You can use setTimemout to postpone an operation, but the thread will continue. So
function some() {
doStuff();
setTimeout(otherStuff, 1000);
doMoreStuff();
}
will run doStuff and doMoreStuff subsequently, and will run otherStuff after a second. That's why it's useless and impossible to use setTimeout as a delay per se. If doMoreStuff should be postponed, you should make that the callback for the delay:
function some() {
doStuff();
setTimeout(doMoreStuff, 1000);
}
or both otherstuff and doMoreStuff delayed:
function some() {
doStuff();
setTimeout(function () {
otherStuff();
doMoreStuff()
}, 1000);
}
Maybe my answer to this SO-question is usefull too.
