/* Build a custom repeat function: perform an action "n" times. */
repeat = (n, action) => {
for (let i = 0; i < n; i++) {
action(i);
}
}
repeat(5, n => {
console.log(2 * n);
});
// → 0 2 4 6 8let text = 'Hello world!';
let result = text.repeat(4);
console.log(result);let string = 'Plumbus'
let count = 3
string.repeat(count); // -> 'PlumbusPlumbusPlumbus'var a="a";
var aaa=a.repeat(3); // "aaa"
// best implementation
repeatStr = (n, s) => s.repeat(n);/* The string.repeat(n) method constructs and returns a new string
with "n" number of copies. */
const chorus = "Because I'm happy. ";
console.log(`Chorus lyrics: ${chorus.repeat(3)}`);
// → "Chorus lyrics: Because I'm happy. Because I'm happy. Because I'm happy. "
// Use within a function
greeting = (n, words) => words.repeat(n);
console.log(greeting(5, "howdy "));
// → "howdy howdy howdy howdy howdy "