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“8512e018830e5984b08c3281118e2986fb9e3c64”上不存在“src/programmer-2017-19.md”
未验证 提交 a27bccb5 编写于 作者: O openharmony_ci 提交者： Gitee
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!13495 翻译完成：12713【轻量级 PR】：update zh-cn/application-dev/reference/apis/js-apis-display.md. 

Merge pull request !13495 from wusongqing/TR12713
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en/application-dev/reference/apis/js-apis-display.md
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...@@ -35,21 +35,21 @@ Describes the attributes of a display. ...@@ -35,21 +35,21 @@ Describes the attributes of a display.
**System capability**: SystemCapability.WindowManager.WindowManager.Core **System capability**: SystemCapability.WindowManager.WindowManager.Core
| Name | Type | Readable | Writable | Description | | Name| Type| Readable| Writable| Description|
| ------------- | ----------------------------- | -------- | -------- | ------------------------------------------------------------ | | -------- | -------- | -------- | -------- | -------- |
| id | number | Yes | No | ID of the display. | | id | number | Yes| No| ID of the display.|
| name | string | Yes | No | Name of the display. | | name | string | Yes| No| Name of the display.|
| alive | boolean | Yes | No | Whether the display is alive. | | alive | boolean | Yes| No| Whether the display is alive.|
| state | [DisplayState](#displaystate) | Yes | No | State of the display. | | state | [DisplayState](#displaystate) | Yes| No| State of the display.|
| refreshRate | number | Yes | No | Refresh rate of the display. | | refreshRate | number | Yes| No| Refresh rate of the display.|
| rotation | number | Yes | No | Screen rotation angle of the display. | | rotation | number | Yes| No| Screen rotation angle of the display.|
| width | number | Yes | No | Width of the display, in pixels. | | width | number | Yes| No| Width of the display, in pixels.|
| height | number | Yes | No | Height of the display, in pixels. | | height | number | Yes| No| Height of the display, in pixels.|
| densityDPI | number | Yes | No | Screen density of the display, in DPI. | | densityDPI | number | Yes| No| Screen density of the display, that is, the number of dots per inch. Generally, the value is **160** or **480**.|
| densityPixels | number | Yes | No | Screen density of the display, in pixels. | | densityPixels | number | Yes| No| Logical density of the display, which is a scaling coefficient independent of the pixel unit. Generally, the value is **1** or **3**.|
| scaledDensity | number | Yes | No | Scaling factor for fonts displayed on the display. | | scaledDensity | number | Yes| No| Scaling factor for fonts displayed on the display. Generally, the value is the same as that of **densityPixels**.|
| xDPI | number | Yes | No | Exact physical dots per inch of the screen in the horizontal direction. | | xDPI | number | Yes| No| Exact physical dots per inch of the screen in the horizontal direction.|
| yDPI | number | Yes | No | Exact physical dots per inch of the screen in the vertical direction. | | yDPI | number | Yes| No| Exact physical dots per inch of the screen in the vertical direction.|
## display.getDefaultDisplay ## display.getDefaultDisplay
...@@ -62,9 +62,9 @@ Obtains the default display object. This API uses an asynchronous callback to re ...@@ -62,9 +62,9 @@ Obtains the default display object. This API uses an asynchronous callback to re
**Parameters** **Parameters**
| Name| Type| Mandatory| Description| | Name| Type| Mandatory| Description|
| -------- | -------- | -------- | -------- | | -------- | -------- | -------- | -------- |
| callback | AsyncCallback<[Display](#display)> | Yes| Callback used to return the default display object.| | callback | AsyncCallback<[Display](#display)> | Yes| Callback used to return the default display object.|
**Example** **Example**
...@@ -90,9 +90,9 @@ Obtains the default display object. This API uses a promise to return the result ...@@ -90,9 +90,9 @@ Obtains the default display object. This API uses a promise to return the result
**Return value** **Return value**
| Type | Description | | Type | Description |
| ---------------------------------- | ---------------------------------------------- | | ---------------------------------- | ---------------------------------------------- |
| Promise<[Display](#display)> | Promise used to return the default display object.| | Promise<[Display](#display)> | Promise used to return the default display object.|
**Example** **Example**
...@@ -117,9 +117,9 @@ Obtains all display objects. This API uses an asynchronous callback to return th ...@@ -117,9 +117,9 @@ Obtains all display objects. This API uses an asynchronous callback to return th
**Parameters** **Parameters**
| Name | Type | Mandatory| Description | | Name | Type | Mandatory| Description |
| -------- | ---------------------------------------------------- | ---- | ------------------------------- | | -------- | ---------------------------------------------------- | ---- | ------------------------------- |
| callback | AsyncCallback<Array<[Display](#display)>> | Yes | Callback used to return all the display objects.| | callback | AsyncCallback<Array<[Display](#display)>> | Yes | Callback used to return all the display objects.|
**Example** **Example**
...@@ -143,9 +143,9 @@ Obtains all display objects. This API uses a promise to return the result. ...@@ -143,9 +143,9 @@ Obtains all display objects. This API uses a promise to return the result.
**Return value** **Return value**
| Type | Description | | Type | Description |
| ----------------------------------------------- | ------------------------------------------------------- | | ----------------------------------------------- | ------------------------------------------------------- |
| Promise<Array<[Display](#display)>> | Promise used to return all the display objects.| | Promise<Array<[Display](#display)>> | Promise used to return all the display objects.|
**Example** **Example**
...@@ -168,10 +168,10 @@ Subscribes to display changes. ...@@ -168,10 +168,10 @@ Subscribes to display changes.
**Parameters** **Parameters**
| Name| Type| Mandatory| Description| | Name| Type| Mandatory| Description|
| -------- | -------- | -------- | -------- | | -------- | -------- | -------- | -------- |
| type | string | Yes| Event type.<br>- **add**, indicating the display addition event.<br>- **remove**, indicating the display removal event.<br>- **change**, indicating the display change event.| | type | string | Yes| Event type.<br>- **add**, indicating the display addition event.<br>- **remove**, indicating the display removal event.<br>- **change**, indicating the display change event.|
| callback | Callback&lt;number&gt; | Yes| Callback used to return the ID of the display.| | callback | Callback&lt;number&gt; | Yes| Callback used to return the ID of the display.|
**Example** **Example**
...@@ -192,10 +192,10 @@ Unsubscribes from display changes. ...@@ -192,10 +192,10 @@ Unsubscribes from display changes.
**Parameters** **Parameters**
| Name| Type| Mandatory| Description| | Name| Type| Mandatory| Description|
| -------- | -------- | -------- | -------- | | -------- | -------- | -------- | -------- |
| type | string | Yes| Event type.<br>- **add**, indicating the display addition event.<br>- **remove**, indicating the display removal event.<br>- **change**, indicating the display change event.| | type | string | Yes| Event type.<br>- **add**, indicating the display addition event.<br>- **remove**, indicating the display removal event.<br>- **change**, indicating the display change event.|
| callback | Callback&lt;number&gt; | No| Callback used to return the ID of the display.| | callback | Callback&lt;number&gt; | No| Callback used to return the ID of the display.|
**Example** **Example**
```js ```js
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