Page 92 - JavaScript

var i = 0, length = myArray.length;
for (; i < length;) {
console.log(myArray[i]);
i++;
}

... or this one:

var key = 0, value;
for (; value = myArray[key++];){
console.log(value);
}

Whichever works best is largely a matter of both personal taste and the specific use case you're
implementing.

Note that each of these variations is supported by all browsers, including very very old ones!

A while loop

One alternative to a for loop is a while loop. To loop through an array, you could do this:

var key = 0;
while(value = myArray[key++]){
console.log(value);
}

Like traditional for loops, while loops are supported by even the oldest of browsers.

Also, note that every while loop can be rewritten as a for loop. For example, the while loop
hereabove behaves the exact same way as this for-loop:

for(var key = 0; value = myArray[key++];){
console.log(value);
}

for...in

In JavaScript, you can also do this:

for (i in myArray) {
console.log(myArray[i]);
}

This should be used with care, however, as it doesn't behave the same as a traditional for loop in
all cases, and there are potential side-effects that need to be considered. See Why is using
"for...in" with array iteration a bad idea? for more details.

for...of

https://riptutorial.com/ 49