for文

for (let i = 0; i < 10; i++) {
    console.log(i)
}
実行結果
0
1
2
3
4
5
6
7
8
9

for-break

for(let i = 0; i < 10; i++) {
    console.log(i)
    if (i == 8) {
        break
    }
}
実行結果
0
1
2
3
4
5
6
7
8

for-continue

for(let i = 0; i < 10; i++) {
    
    if (i % 2 == 0) {
        continue
    }
    console.log(i)
}
実行結果
1
3
5
7
9

for-in

let array = {
    variable_01 = "value_01",
    variable_02 = "value_02",
    variable_03 = "value_03"
}

for (var val in array) {
    console.log(val)
}
実行結果
value_01
value_02
value_03

for-of

let array = [1, 2, 3, 4, 5]

for (var val of array) {
    console.log(val)
}
実行結果
1
2
3
4
5