vars in for loop declarations should be declared in upper-scope. #145
Description
function logTheLengthOfTheArrayForEachElementInTheArrayAsync() {
var messages = [0, 1, 2];
for (var i = 0; i < messages.length; i++) {
function logMessage() {
console.log(i)
}
setTimeout(logMessage)
}
}
logTheLengthOfTheArrayForEachElementInTheArrayAsync();prints:
3
3
3
but:
function logTheLengthOfTheArrayForEachElementInTheArrayAsync() {
const messages = [0, 1, 2];
for (let i = 0; i < messages.length; i++) {
function logMessage() {
console.log(i)
}
setTimeout(logMessage)
}
}
logTheLengthOfTheArrayForEachElementInTheArrayAsync();prints:
0
1
2