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实现格式化输出,比如输入 999999999,输出 999,999,999 #831

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lgwebdream opened this issue Jul 6, 2020 · 2 comments
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JavaScript teach_tag 亚美科技 company 编程题 teach_tag

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@lgwebdream
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@lgwebdream lgwebdream added JavaScript teach_tag 亚美科技 company 编程题 teach_tag labels Jul 6, 2020
@lgwebdream
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扫描下方二维码,获取答案以及详细解析,同时可解锁800+道前端面试题。

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function parseMoney(num){
  let [integer, decimal] = String(num).split('.');
  integer = integer.replace(/\d{1,3}(?=(\d{3})+$)/g, '$&,');
  decimal = decimal ? `.${decimal}` : '';
  return integer + decimal;
}
console.log(parseMoney(999999999)); // 999,999,999

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