# Preset Properties
# 1. Preset Properties of All Events
The following present properties are properties that all events in uni-app SDK (including auto-tracking events) would have.
# 2. Preset Properties of Auto-tracking Event
The following preset properties are the properties set specially for each auto-tracking event
- Preset properties of mini porgram active(ta_mp_show)
| Property name | Display name | Property type | Instruction |
|---|---|---|---|
| #url_path | page path | Text | The mini program starts the path to the page being displayed |
- Preset properties of mini porgram inactive(ta_mp_hide)
| Property name | Display name | Property type | Instruction |
|---|---|---|---|
| #duration | event duration | Numeric value | Indicates the duration between the start of ta_mp_show and the hiding of ta_mp_hide, in seconds |
- Preset properties of mini porgram page display（ta_mp_view）
| Property name | Display name | Property type | Instruction |
|---|---|---|---|
| #url_path | page path | Text | The mini program starts the path to the page being displayed |
| #referrer | forward address | Text | the path of the page before the page is displayed, the path before the jump. If it is the home page displayed when the mini-program is started, the value is "open directly". |
- Preset properties of mini porgram page display(ta_mp_share)
| Property name | Display name | Property type | Instruction |
|---|---|---|---|
| #url_path | page path | Text | the path to the page where the mini program is forwarded |
# 3.Obtain Preset Properties
You can call getPresetProperties() to obtain preset properties.
When some preset properties of the App side is required for the server-side data tracking, this method can be applied to obtain the preset properties of the App side and then send them to the server.
//obtain property objects
var presetProperties = ta.getPresetProperties();
//generate event preset properties
var properties = presetProperties.toEventPresetProperties();
/*
{
"#device_model":"iPhone 5",
"#device_id":"3204487163-1624513721217",
"#screen_width":320,
"#screen_height":568,
"#os":"iOS",
"#os_version":"10.0.1",
"#network_type":"wifi",
"#zone_offset":8,
"#manufacturer":"Apple"
}
*/
//obtain a certain preset properties
var os = presetProperties.os; //os type
var osVersion = presetProperties.osVersion; //system version number
var networkType = presetProperties.networkType; //network type
var manufacture = presetProperties.manufacture; //mobile phone manufacturer, e.g., HuaWei
var deviceModel = presetProperties.deviceModel; //device model
var screenWidth = presetProperties.screenWidth; //screen width
var screenHeight = presetProperties.screenHeight; //screen height
var deviceId = presetProperties.deviceId; //unique identifier of device
var zoneOffset = presetProperties.zoneOffset; ////timezone offset value
IP and national city information are parsed and generated by the server. The client side shall not provide the interface to obtain such properties