优雅的嘶嘶声示例

Posted 2021-02-24

When you use the `+` operator on an Array, it converts it to a string.` [].toString()` is the same as `[].join(',')`, which gives an empty string in case the array value is `undefined` or `null`. This also works in javascript `([undefined] + "b" === "b")`.

var i;
 
for (i = 1; i <= 100; i++) {
  console.log([!(i % 3) ? 'fizz' : void 0] + [!(i % 5) ? 'buzz' : void 0] || i);
}