for mdn js code example
Example: javascript for
let str = "";
for (let i = 0; i < 9; i++) {
str = str + i;
}
console.log(str);
// expected output: "012345678"
let str = "";
for (let i = 0; i < 9; i++) {
str = str + i;
}
console.log(str);
// expected output: "012345678"