javascript - 有没有办法输出字符而不是数字？

Question

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var numbers = [1, 3, 6, 1, 1];

var one = numbers.filter(function(number) {
  return number === 1;
});

var output ='1: '+one.length;
console.log(output);

---

“输出”现在是'1:3'

“期望的输出”'1: ***

Answer 1

您可以在 * 字符上调用 repeat 并将它应该重复的次数传递给它:

var numbers = [1, 3, 6, 1, 1];

var one = numbers.filter(function(number) {
  return number === 1;
});

var output = '1: ' + '*'.repeat(one.length);
console.log(output);