update docs

Signed-off-by: Nshawn_he <shawn.he@huawei.com>

en/application-dev/reference/apis/js-apis-hilog.md

+# HiLog
+
+> **Note:**
+>
+> The initial APIs of this module are supported since API version 8. Newly added APIs will be marked with a superscript to indicate their earliest API version.
+
+## Modules to Import
+
+```
+import hilog from '@ohos.hilog';
+```
+
+## System Capabilities
+
+SystemCapability.HiviewDFX.HiLog
+
+## hilog.debug
+
+debug(domain: number, tag: string, format: string, ...args: any[]) : void
+
+Prints logs of the DEBUG level.
+
+**Parameters**
+
+| Name| Type| Mandatory| Description|
+| ------ | -------------- | ---- | ------------------------------------------------------------ |
+| domain | number         | Yes| Service domain. The value ranges from **0x0** to **0xFFFFF**.|
+| tag    | string         | Yes| String constant used to identify the class or service behavior.|
+| format | string         | Yes| String constant format, including the parameter type and privacy identifier. A parameter without the privacy identifier is treated as a privacy parameter by default.|
+| args   | any[]          | Yes| Variable-length parameter list corresponding to the parameter type in the format string. The number and type of parameters must map to the identifier in the format string.|
+
+**Example**
+
+```
+hilog.debug(0xFF00, "testTag", "%d: %{private}s World %{public}f", 1, "hello", 3.0);
+```
+
+**Output**
+
+```
+09-08 12:49:35.941  1547  2452 D FF00/testTag: 1: hello World 3.0
+```
+
+## **hilog.info**
+
+info(domain: number, tag: string, format: string, ...args: any[]) : void
+
+Prints logs of the INFO level.
+
+**Parameters**
+
+| Name| Type| Mandatory| Description|
+| ------ | -------------- | ---- | ------------------------------------------------------------ |
+| domain | number         | Yes| Service domain. The value ranges from **0x0** to **0xFFFFF**.|
+| tag    | string         | Yes| String constant used to identify the class or service behavior.|
+| format | string         | Yes| String constant format, including the parameter type and privacy identifier. A parameter without the privacy identifier is treated as a privacy parameter by default.|
+| args   | any[]  | Yes| Variable-length parameter list corresponding to the parameter type in the format string. The number and type of parameters must map to the identifier in the format string.|
+
+**Example**
+
+```
+hilog.info(0xFF00, "testTag", "%d: %{private}s World %{public}f", 1, "hello", 3.0);
+```
+
+**Output**
+
+```
+09-08 12:49:35.941  1547  2452 I FF00/testTag: 1: hello World 3.0
+```
+
+## hilog.warn
+
+warn(domain: number, tag: string, format: string, ...args: any[]) : void
+
+Prints logs of the WARN level.
+
+**Parameters**
+
+| Name| Type| Mandatory| Description|
+| ------ | -------------- | ---- | ------------------------------------------------------------ |
+| domain | number         | Yes| Service domain. The value ranges from **0x0** to **0xFFFFF**.|
+| tag    | string         | Yes| String constant used to identify the class or service behavior.|
+| format | string         | Yes| String constant format, including the parameter type and privacy identifier. A parameter without the privacy identifier is treated as a privacy parameter by default.|
+| args   | any[]  | Yes| Variable-length parameter list corresponding to the parameter type in the format string. The number and type of parameters must map to the identifier in the format string.|
+
+**Example**
+
+```
+hilog.warn(0xFF00, "testTag", "%d: %{private}s World %{public}f", 1, "hello", 3.0);
+```
+
+**Output**
+
+```
+09-08 12:49:35.941  1547  2452 W FF00/testTag: 1: hello World 3.0
+```
+
+## hilog.error
+
+error(domain: number, tag: string, format: string, ...args: any[]) : void
+
+Prints logs of the ERROR level.
+
+**Parameters**
+
+| Name| Type| Mandatory| Description|
+| ------ | -------------- | ---- | ------------------------------------------------------------ |
+| domain | number         | Yes| Service domain. The value ranges from **0x0** to **0xFFFFF**.|
+| tag    | string         | Yes| String constant used to identify the class or service behavior.|
+| format | string         | Yes| String constant format, including the parameter type and privacy identifier. A parameter without the privacy identifier is treated as a privacy parameter by default.|
+| args   | any[]  | Yes| Variable-length parameter list corresponding to the parameter type in the format string. The number and type of parameters must map to the identifier in the format string.|
+
+**Example**
+
+```
+hilog.error(0xFF00, "testTag", "%d: %{private}s World %{public}f", 1, "hello", 3.0);
+```
+
+**Output**
+
+```
+09-08 12:49:35.941  1547  2452 E FF00/testTag: 1: hello World 3.0
+```
+
+## hilog.fatal
+
+fatal(domain: number, tag: string, format: string, ...args: any[]) : void
+
+Prints logs of the FATAL level.
+
+**Parameters**
+
+| Name| Type| Mandatory| Description|
+| ------ | -------------- | ---- | ------------------------------------------------------------ |
+| domain | number         | Yes| Service domain. The value ranges from **0x0** to **0xFFFFF**.|
+| tag    | string         | Yes| String constant used to identify the class or service behavior.|
+| format | string         | Yes| String constant format, including the parameter type and privacy identifier. A parameter without the privacy identifier is treated as a privacy parameter by default.|
+| args   | any[]  | Yes| Variable-length parameter list corresponding to the parameter type in the format string. The number and type of parameters must map to the identifier in the format string.|
+
+**Example**
+
+```
+hilog.fatal(0xFF00, "testTag", "%d: %{private}s World %{public}f", 1, "hello", 3.0);
+```
+
+**Output**
+
+```
+09-08 12:49:35.941  1547  2452 F FF00/testTag: 1: hello World 3.0
+```
+
+## hilog.isLoggable
+
+isLoggable(domain: number, tag: string, level: LogLevel) : boolean
+
+Checks whether printing is enabled for a domain, tag, or log level.
+
+**Parameters**
+
+| Name| Type| Mandatory| Description|
+| ------ | --------------------- | ---- | ------------------------------------------ |
+| domain | number                | Yes| Service domain. The value ranges from **0x0** to **0xFFFFF**.|
+| tag    | string                | Yes| String constant used to identify the class or service behavior.|
+| level  | [LogLevel](#loglevel) | Yes| Log level.|
+
+**Example**
+
+```
+hilog.isLoggable(0xFF00, "testTag", hilog.DEBUG);
+```
+
+## LogLevel
+
+Enumerates event types.
+
+| Name| Default Value| Description|
+| ----- | ------ | ----------- |
+| DEBUG | 3      | DEBUG level|
+| INFO  | 4      | INFO level|
+| WARN  | 5      | WARN level|
+| ERROR | 6      | ERROR level|
+| FATAL | 7      | FATAL level|