JavaScript/保留字/else

Theelse关键字

Theelse关键字在 if 语句中创建了一个子句。它是可选的，仅在所有其他 if … else if 块不执行时才执行。

示例

代码

  var result = 17;

  if (result%2 == 0) {
    console.log(result + " is even.");
  } else if (result > 20) {
    console.log(result + " is greater than 20.");
  } else {
    console.log(result + " is odd and not greater than 20.");
  }

返回以下

17 is odd and not greater than 20.

参见

• else