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• 句法
• 范例
• 规范
• 浏览器兼容性
• 另请参阅
• 相关话题

removeItem() 方法在 存储 interface, when passed a key name, will remove that key from the given 存储 object if it exists. The 存储 接口在 Web 存储 API provides access to a particular domain's session or local storage.

If there is no item associated with the given key, this method will do nothing.

句法

storage.removeItem(keyName);
					

参数

keyName

DOMString containing the name of the key you want to remove.

返回值

undefined .

范例

The following function creates three data items inside local storage, then removes the image data item.

function populateStorage() {
  localStorage.setItem('bgcolor', 'red');
  localStorage.setItem('font', 'Helvetica');
  localStorage.setItem('image', 'myCat.png');
  localStorage.removeItem('image');
}
					

We can do the same for the session storage.

function populateStorage() {
  sessionStorage.setItem('bgcolor', 'red');
  sessionStorage.setItem('font', 'Helvetica');
  sessionStorage.setItem('image', 'myCat.png');
  sessionStorage.removeItem('image');
}
					

注意 : To see this used within a real world example, see our Web 存储演示 .

规范

规范	状态	注释
HTML 实时标准 The definition of 'Storage.removeItem' in that specification.	实时标准

浏览器兼容性

The compatibility table on this page is generated from structured data. If you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. 更新 GitHub 上的兼容性数据

	桌面						移动
	Chrome	Edge	Firefox	Internet Explorer	Opera	Safari	Android webview	Chrome for Android	Firefox for Android	Opera for Android	Safari on iOS	Samsung Internet
removeItem	Chrome 4	Edge 12	Firefox 3.5	IE 8	Opera 10.5	Safari 4	WebView Android ≤37	Chrome Android 18	Firefox Android 6	Opera Android 11	Safari iOS 3.2	Samsung Internet Android 1.0

图例

完整支持

完整支持

另请参阅

使用 Web 存储 API

元数据

• 最后修改： Jun 16, 2020

相关话题

1. Web 存储 API
2. 存储
3. 特性

   1. length
4. 方法

   1. clear()
   2. getItem()
   3. key()
   4. removeItem()
   5. setItem()
5. Related pages for Web Storage API

   1. StorageEvent
   2. Window.localStorage
   3. Window.sessionStorage