JavaScript/保留字/finally

Thefinally關鍵字

Thefinally關鍵字用作 try 語句的子句。

示例

程式碼

  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
  }

(將向名為“demo”的 HTML 元素新增錯誤訊息。)

result = undefined

參見

• catch
• throw
• try