JavaScript/保留字/finally

Thefinally关键字

Thefinally关键字用作 try 语句的子句。

示例

代码

  var result;

  try {
    result = log(-12.05);
    alert("Executed comment successfully.");
  } catch(err) {
    document.getElementById("demo").innerHTML = err.message;
  } finally {
    alert("result = " + result); // This line will execute anyway
  }

(将向名为“demo”的 HTML 元素添加错误消息。)

result = undefined

参见

• catch
• throw
• try