← 返回首页
Promise.reject() - JavaScript | MDN
HTML

HTML: Markup language

HTML reference HTML guides Markup languages
CSS

CSS: Styling language

CSS reference CSS guides Layout cookbook
JavaScriptJS

JavaScript: Scripting language

JS reference JS guides
Web APIs

Web APIs: Programming interfaces

Web API reference Web API guides
All

All web technology

Technologies Topics
Learn

Learn web development

Frontend developer course Learn HTML Learn CSS Learn JavaScript
Tools

Discover our tools

About

Get to know MDN better

Blog
Toggle sidebar
  1. 給開發者的 Web 技術文件
  2. JavaScript
  3. JavaScript 參考文件
  4. 標準內建物件
  5. Promise
  6. Promise.reject()
Theme
  • OS default
  • Light
  • Dark
正體中文 (繁體)
Remember language Learn more

此頁面由社群從英文翻譯而來。了解更多並加入 MDN Web Docs 社群。

View in English Always switch to English

Promise.reject()

Baseline Widely available

This feature is well established and works across many devices and browser versions. It’s been available across browsers since 2015年7月.

Promise.reject(reason) 方法回傳一個以 reason 拒絕的 Promise 物件。

In this article

語法

js
Promise.reject(reason);

參數

reason

Promise 的失敗訊息。

回傳值

一個以 reason 拒絕的 Promise。

描述

靜態函式 Promise.reject 回傳一個被拒絕的 Promise。由於除錯目的及選擇性錯誤捕捉（selective error catching），使用一個 instanceof Error 作為 reason 是很有幫助的。

範例

使用靜態方法 Promise.reject()

js
Promise.reject(new Error("fail")).then( function (error) { // not called }, function (error) { console.log(error); // Stacktrace }, );

規範

Specification
ECMAScript® 2027 Language Specification
# sec-promise.reject

瀏覽器相容性

Enable JavaScript to view this browser compatibility table.

參見

Help improve MDN

Was this page helpful to you?
Yes No
Learn how to contribute

This page was last modified on 2025年7月14日 by MDN contributors.

View this page on GitHub • Report a problem with this content
  1. 標準內建物件
  2. Promise
  3. 建構子
    1. Promise()
  4. 靜態方法
    1. Promise.all()
    2. allSettled()
    3. any()
    4. Promise.race()
    5. Promise.reject()
    6. Promise.resolve()
    7. try()
    8. withResolvers()
  5. 靜態屬性
    1. [Symbol.species]
  6. 實體方法
    1. Promise.prototype.catch()
    2. Promise.prototype.finally()
    3. Promise.prototype.then()
  7. 繼承
  8. Object/Function
  9. 靜態方法
    1. Function.prototype.apply()
    2. Function.prototype.bind()
    3. Function.prototype.call
    4. toString()
    5. [Symbol.hasInstance]()
  10. 靜態屬性
    1. displayName
    2. Function.length
    3. name
    4. prototype
    5. arguments
    6. caller
  11. 實體方法
    1. __defineGetter__()
    2. __defineSetter__()
    3. __lookupGetter__()
    4. __lookupSetter__()
    5. Object.prototype.hasOwnProperty()
    6. isPrototypeOf()
    7. propertyIsEnumerable()
    8. toLocaleString()
    9. toString()
    10. valueOf()
  12. 實體屬性
    1. __proto__
    2. constructor

Your blueprint for a better internet.

MDN Contribute Developers

Visit Mozilla Corporation’s not-for-profit parent, the Mozilla Foundation.
Portions of this content are ©1998–2026 by individual mozilla.org contributors. Content available under a Creative Commons license.