In the following scenario, event setTimeout
get queued and only after stack clears out, i = 3 will print 3 times
//ver1
for (var i = 0; i < 3; i ++ ) setTimeout(()=> console.log(i), 3)
The following will print 1 2 3
in order since i
is captured in func
x ??
//ver2
for (var i = 0; i < 3; i++) {
(function x(i) {
setTimeout(() => {console.log(i)}, 30)
})(i);
}
Why the following only prints 2
one time?
//ver3
for (var i = 0; i < 3; i++) {
function x(i) {
setTimeout(() => {console.log(i)}, 30)
}(i);
}
I'm mostly confused between ver2
and ver3
EDIT:
ver2
explanation can be found here. Any insight on why ver3
only prints 2
?