From 3b0f3b4310d7cad3bd61d0fbfcbc2f81d9cc6713 Mon Sep 17 00:00:00 2001
From: Thomas Citharel <github@tcit.fr>
Date: Sat, 8 May 2021 14:41:17 +0200
Subject: Fix a typo in the example for CacheStorage.keys() (#781)

Follow-up to https://github.com/mdn/content/pull/4790 on the main repo

Signed-off-by: Thomas Citharel <tcit@tcit.fr>
---
 files/zh-cn/web/api/cachestorage/keys/index.html | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'files/zh-cn')

diff --git a/files/zh-cn/web/api/cachestorage/keys/index.html b/files/zh-cn/web/api/cachestorage/keys/index.html
index 8d174f9c2c..57f7148a28 100644
--- a/files/zh-cn/web/api/cachestorage/keys/index.html
+++ b/files/zh-cn/web/api/cachestorage/keys/index.html
@@ -26,7 +26,7 @@ translation_of: Web/API/CacheStorage/keys
 
 <p>在此代码片段中，我们监听{{domxref("ServiceWorkerGlobalScope.onactivate", "activate")}} 事件，然后运行一个 {{domxref("ExtendableEvent.waitUntil","waitUntil()")}} 方法，该方法在新的 service worker 被激活之前清除老的、无用的cache。 这里我们设置一个包含缓存名称的白名单。 通过使用 <code>keys()方法</code> 来返回{{domxref("CacheStorage")}} 对象中的keys集合，然后检查缓存key是否在白名单中，如果不存在，则使用 {{domxref("CacheStorage.delete")}} 方法来删除该缓存。</p>
 
-<pre class="brush: js">then.addEventListener('activate', function(event) {
+<pre class="brush: js">this.addEventListener('activate', function(event) {
   var cacheWhitelist = ['v2'];
 
   event.waitUntil(
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