var colors=["red","blue","green"];
for (let i = 0; i < colors.length; i++) {
console.log(colors[i]);
}let array = ['Item 1', 'Item 2', 'Item 3'];
array.forEach(item => {
console.log(item); // Logs each 'Item #'
});let array = ["foo", "bar"]
let low = 0; // the index to start at
let high = array.length; // can also be a number
/* high can be a direct access too
the first part will be executed when the loop starts
for the first time
the second part ("i < high") is the condition
for it to loop over again.
the third part will be executen every time the code
block in the loop is closed.
*/
for(let i = low; i < high; i++) {
// the variable i is the index, which is
// the amount of times the loop has looped already
console.log(i);
console.log(array[i]);
} // i will be incremented when this is hit.
// output:
/*
0
foo
1
bar
*/var colors = ["red","blue","green"];
colors.forEach(function(color) {
console.log(color);
});let array = ['Item 1', 'Item 2', 'Item 3'];
for (let index = 0; index < array.length; index++) {
console.log("index", index);
console.log("array item", array[index]);
}JS Loops
for (before loop; condition for loop; execute after loop) {
// what to do during the loop
}
for
The most common way to create a loop in Javascript
while
Sets up conditions under which a loop executes
do while
Similar to the while loop, however, it executes at least once and performs a check at the end to
see if the condition is met to execute again
break
Used to stop and exit the cycle at certain conditions
continue
Skip parts of the cycle if certain conditions are met