WebStorage (JxBrowser 6.23.1 API)

```
public interface WebStorage
```
The WebStorage interface of the Web Storage API provides access to the session storage or local storage for a particular document on the loaded web page, allowing you to for example add, modify or delete stored data items.
Web Storage API的WebStorage接口提供对已加载网页上特定文档的会话存储或本地存储的访问，从而允许您添加，修改或删除存储的数据项。

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method and Description
`boolean`	`clear()` Removes all key/value pairs in the storage. 删除存储中的所有键/值对。
`boolean`	`contains(java.lang.String key)` Returns `true` if storage contains specified `key` or `false` otherwise. 如果存储包含指定的键，则返回true；否则返回false。
`java.lang.String`	`getItem(java.lang.String key)` Returns the value associated with the given `key` or `null` when the `key` doesn't exist. 返回与给定键关联的值；如果键不存在，则返回null。
`java.lang.String`	`key(long index)` Returns the name of the key in the storage. 返回存储中键的名称。
`long`	`length()` Returns number of key/value pairs in the storage. 返回存储中键/值对的数量。
`boolean`	`removeItem(java.lang.String key)` Removes key/value pair from the storage. 从存储中删除键/值对。
`boolean`	`setItem(java.lang.String key, java.lang.String value)` Adds the `key` and `value` to the storage, or updates key's value if it already exists. 将密钥和值添加到存储中，或更新密钥的值（如果已存在）。

- Method Detail
  - length
```
long length()
```
    Returns number of key/value pairs in the storage.
    返回存储中键/值对的数量。
    
    Returns:
    
    number of key/value pairs in the storage. Returns 0 if the storage hasn't been initialized yet or has no key/value pairs. 存储中键/值对的数量。如果尚未初始化存储或没有键/值对，则返回0。
  - key
```
java.lang.String key(long index)
```
    Returns the name of the key in the storage. The order of keys is user-agent defined, so you should not rely on it.
    返回存储中键的名称。键的顺序是用户代理定义的，因此您不应依赖它。
    
    Parameters:
    
    index - an integer representing the number of the key you want to get the name of. This is a zero-based index. Must be in range 0 < index < length(). -一个整数，代表要获取名称的键的编号。这是从零开始的索引。必须在范围内。
    
    Returns:
    
    a string containing the name of the key or null. 包含键或名称的字符串。
    
    Throws:
    
    java.lang.IllegalArgumentException - when the index isn't in 0 < index < length() range.
  - getItem
```
java.lang.String getItem(java.lang.String key)
```
    Returns the value associated with the given key or null when the key doesn't exist.
    返回与给定键关联的值；如果键不存在，则返回null。
    
    Parameters:
    
    key - the name of the key you want to retrieve the value of. Cannot be null. -要检索其值的键的名称。不可能是。
    
    Returns:
    
    the value associated with the given key or null when the key doesn't exist. 与给定或不存在的值关联的值。
    
    Throws:
    
    java.lang.IllegalArgumentException - when the key is null.
  - setItem
```
boolean setItem(java.lang.String key,
                java.lang.String value)
```
    Adds the key and value to the storage, or updates key's value if it already exists.
    将密钥和值添加到存储中，或更新密钥的值（如果已存在）。
    
    Parameters:
    
    key - the name of the key you want to create/update. Cannot be null. -您要创建/更新的密钥的名称。不可能是。
    
    value - the value you want to give the key you are creating/updating. Cannot be null. -您要提供要创建/更新的密钥的值。不可能是。
    
    Returns:
    
    true if key/value pair was successfully added or updated. Returns false in case of exceptions. 键/值对是否已成功添加或更新。在有异常的情况下返回。
    
    Throws:
    
    java.lang.IllegalArgumentException - when the key or value is null.
  - removeItem
```
boolean removeItem(java.lang.String key)
```
    Removes key/value pair from the storage.
    从存储中删除键/值对。
    
    Parameters:
    
    key - the name of the key you want to remove. Cannot be null. -您要删除的密钥的名称。不可能是。
    
    Returns:
    
    true if key/value pair was successfully removed, or key doesn't exist. Returns false in case of exceptions. 如果键/值对已成功删除，或者键不存在。在有异常的情况下返回。
    
    Throws:
    
    java.lang.IllegalArgumentException - when the key is null.
  - clear
```
boolean clear()
```
    Removes all key/value pairs in the storage.
    删除存储中的所有键/值对。
    
    Returns:
    
    true if storage was successfully cleared. Returns false in case of exceptions or storage was not initialized. 是否成功清除存储。如果发生异常或未初始化存储，则返回。
  - contains
```
boolean contains(java.lang.String key)
```
    Returns true if storage contains specified key or false otherwise.
    如果存储包含指定的键，则返回true；否则返回false。
    
    Parameters:
    
    key - the name of the key you want to check. Cannot be null. -您要检查的密钥的名称。不可能是。
    
    Returns:
    
    true if storage contains specified key or false otherwise. 是否包含指定的存储空间。
    
    Throws:
    
    java.lang.IllegalArgumentException - when the key is null.

Interface WebStorage

Method Summary

Method Detail

length

key

getItem

setItem

removeItem

clear

contains